A 70-year-old man disappeared for more than 24 hours, prompting an extensive search that stretched into the evening.

The Oahu man was last seen in the Big Island's Volcano area before he was reported missing around 12:16 p.m. Oct. 19, according to the Hawaii Police Department.

The man was identified as David Arai, whose son told Hawaii-based news station KHON2 his father was familiar with the area's hiking trails and that he frequently hiked alone.

MISSING 72-YEAR-OLD HIKER FOUND ALIVE DAYS AFTER FRIGHTENING 100-FOOT FALL LEFT HER BADLY INJURED

Police believed the man was at risk due to his age and other information gathered during the investigation.

Officers later located Arai's empty rental car inside Hawaii Volcanoes National Park, according to the department.

Hawaii Island police and National Park personnel searched the area on the ground, while a Hawaii Fire Department helicopter assisted from above.

Fox News Digital reached out to the Hawaii Police Department and David Arai for comment.

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K-9 Trina, a 3-year-old Labrador retriever specially trained to track people by scent, joined the search with her handler, Officer Christopher Ross, police said.

At about 7:30 p.m., Trina located the man on a trail roughly 2 miles from where his rental car had been found, according to the department.

Ross told KHON2 that Arai was lying on his back in bushes just off the trail when they found him.

Trina approached the man and licked his hand, according to the officer.

"The man was safely carried back to the trailhead and was subsequently transported to Hilo Benioff Medical Center for medical treatment due to dehydration and exposure," the department said in the press release.

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The discovery marked the second time in two months that Trina located a missing person, according to police.

Originally from Sweden, Trina is trained to help locate missing children and endangered adults throughout Hawaii.

Just last month, she helped authorities locate an endangered teenager in Waikoloa, police said.

Fox News Digital previously reported on another search for an older hiker who disappeared during a trip in Northern California.

Mary Beth Granbery, 72, was reported missing after leaving for a multiday camping trip on Sept. 28 and failing to return as expected.

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Family members later found her camper van at the Cabin Creek Trailhead, prompting authorities in Siskiyou and Shasta counties to launch a coordinated search.

Ground crews found Granbery alive near Cabin Creek on Oct. 4 after she fell down a steep embankment and suffered serious injuries and exposure to the elements.

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A California Highway Patrol helicopter helped lift Granbery from the rugged terrain before she was taken to a hospital, where authorities said she was in stable condition with non-life-threatening injuries.

The national park is also home to Kilauea, which recently erupted for the 55th time since late 2024 after a rare two-month pause, according to Fox Weather.

The U.S. State Department has escalated its travel warning for an East African nation popular for its wildlife safaris, urging Americans to reconsider visiting amid heightened health concerns and ongoing security threats.

The State Department on Monday raised its travel advisory for Kenya from Level 2, "Exercise Increased Caution," to Level 3, "Reconsider Travel."

Health risks and crime were cited among the reasons for the advisory, along with civil unrest, kidnapping, terrorism and traffic safety concerns.

AMERICANS WARNED OF KIDNAPPING, EXTORTION AS VIOLENT CRIME GRIPS PARTS OF TOURIST SPOT

"Prepare a will," the advisory added. "Establish a proof of life protocol with your loved ones."

Americans are urged to avoid certain neighborhoods in Nairobi and several counties across the country due to risks of crime, kidnapping and terrorism — as well as areas near the Ethiopian border due to unrest.

In its broader warning about the country, State Department officials said that violent crime "can occur at any time," noting that petty crime "is common" throughout Kenya.

The advisory also noted that solo travelers should exercise caution, and that some Americans have been sexually assaulted in bars, resorts and hotels.

"Local police often are unable to respond effectively to crimes," the advisory said.

SEXUAL ASSAULTS AND SCAMS PLAGUE TOP VACATION HOT SPOT, PROMPTING URGENT ADVISORY

The State Department also warned that Americans frequently fall victim to investment scams involving gold and other high-value commodities, with Kenyan authorities unlikely to help victims recover their losses.

"Property disputes are common in Kenya," added the warning.

"Americans who have bought land, churches and businesses have lost their investments or been pushed off the property by locals who claim the land or business."

Medical services in Kenya are limited, particularly in rural areas, with some facilities lacking essential medicines and equipment.

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"Except for a few private medical facilities based in the large urban centers with enhanced capability, many health issues may require medical evacuation at your own expense," officials said. "Medical facilities will usually deny service if payment is not made upfront."

The advisory also warned that protests can turn violent — with demonstrators previously attacking vehicles carrying Americans, including safari vehicles and motorcycle taxis.

Americans are urged to stay alert in tourist spots, keep a low profile and avoid demonstrations and crowds while visiting the country.

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Kenya is known around the world for its wildlife safaris, picturesque savannas and national parks, which all draw millions of international tourists each year.

The country attracted approximately 2.7 million international visitors in 2025, with travelers from the Americas accounting for 14% of arrivals, according to government tourism figures.

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Similar warnings have been issued for other popular international travel destinations.

Last month, the State Department updated its travel advisory for Peru, warning Americans about crime, civil unrest, kidnapping and terrorism.

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Meanwhile, travelers visiting Brazil have been cautioned about criminals targeting tourists at bars and through dating apps before drugging and robbing them.

The U.S. Embassy in France is warning Americans to steer clear of violent protests as unrest sparked curfews and raised concerns about travel disruptions across the country.

The riots — fueled by a range of grievances, including rising living costs and mass migration — have been reported across France, with protests reported in cities including Paris, Lille and Lyon. Authorities have imposed localized curfews as a result.

The embassy said in a Monday statement that partial curfews had been introduced in several French cities, with additional restrictions possible.

MCDONALD'S RANSACKED AND WRECKED AS STORES, RESTAURANTS SUFFER FROM VIOLENCE AND RIOTING

"Following the October 17 protests that turned violent, media report the Prime Minister’s office introduced partial curfews for Monday, October 19 and Tuesday, October 20 in several cities across France, including Lille," the embassy said.

"Media report more curfews may follow for parts of Paris and in prefectures across the country, and that scattered protests could continue."

In Paris, authorities also imposed overnight curfews in areas including Place de la République and the Les Halles Shopping District, according to The Associated Press (AP).

Riot police deployed tear gas across the streets near Place de la République in an attempt to disperse crowds during the escalating street battles, the same source reported. 

ANGRY LOCALS BLOCK FAMOUS BEACH AS MASS TOURISM PROTESTS ESCALATE AT VACATION HOT SPOT

The gas quickly mixed with heavy, acrid smoke from torched vehicles and street fires, according to Reuters.

The chaos forced Dutch entrepreneur Tije De Boer, who was visiting Paris with his children, to evacuate his hotel at Place de la République. 

De Boer described the scene to Reuters as "like a war zone" following the intense protests that rocked the French capital on Oct. 17.

"It's like a war zone here," De Boer said, according to the Reuters report.

TOP TOURIST DESTINATION IN THE WORLD SHUTS DOWN AMID VIOLENT PROTESTS

Major tourist attractions have also been impacted.

The Louvre Museum in Paris was forced to close Monday after protesters blocked its entrances, Fox News Digital previously reported.

Travelers visiting Paris are being advised to avoid popular protest gathering spots, including Place de la République, Place de la Bastille and Place de la Nation, along with major thoroughfares such as Boulevard Voltaire, which are frequently used for demonstrations, according to The Times of London.

Outside the capital, Lyon's tourism office at Place Bellecour was vandalized and set ablaze during the Oct. 17 demonstrations, according to city officials. 

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Visitor services have since been relocated to a temporary facility on the same square.

The violence also spread to other French cities, including Limoges, where the historic town hall was set ablaze during the Oct. 17 unrest, according to numerous reports. 

In Bordeaux, the mayor reported that as many as 100 stores had been looted during the demonstrations, Reuters reported.

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Despite the violence, flights to and from Paris have largely continued operating, according to flight data reviewed by Fox News Digital.

However, travelers could still face disruptions on the ground, with the embassy advising Americans to check for Metro station closures and other transportation interruptions before heading out.

The embassy also urged travelers to confirm flight schedules directly with their airlines and allow extra time to reach their destinations.

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"Monitor media and local resources for updated information and curfews in your area," the statement added. "Plan alternative routes and allow extra travel time for travel."

Fox News Digital reached out to the State Department for comment.

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Fox News Digital's Jessica Mekles and Reuters contributed reporting.

A passenger flight was forced to make an emergency landing shortly after takeoff following reports of a strange odor on board that left travelers fearing for their lives.

An American Airlines flight departed from St. Louis Lambert International Airport on Oct. 17, bound for Philadelphia, before turning back to the airport.

Gary Leff, a Texas-based aviation expert who founded the blog "View from the Wing," told Fox News Digital that engine oil entering an aircraft's air supply could potentially explain the odor, although the cause of the incident has not yet been confirmed.

PROBE UNDERWAY AS 7 FLIGHT ATTENDANTS SICKENED BY BAFFLING ODOR ON MAJOR AIRLINE

"When that happens, you can get smoke, you can get vibration, you can get loud noises. It can also wind up making people ill," Leff said.

FlightAware data reviewed by Fox News Digital showed that the plane was in the air for 34 minutes before landing back at St. Louis Lambert International Airport.

In a statement to Fox News Digital, American Airlines confirmed that the flight returned to St. Louis shortly after takeoff following a reported odor on board.

The airline said the aircraft landed safely and was taken out of service for inspection by its maintenance team.

The flight had already been delayed roughly two hours following a reported engine issue before passengers experienced trouble in the air, according to a couple who spoke to local outlet First Alert 4.

TRAVEL NIGHTMARE UNFOLDS AS MAJOR AIRLINE SCRAPS FLIGHT AFTER HARROWING 12-HOUR DELAY

The passengers — Tessa and Mark Springer of Waterloo, Illinois — were traveling to Pennsylvania for work when they heard a troubling noise coming from the back of the plane before takeoff.

"We heard just this really horrible noise coming from the back of the plane. It was like ... real loud buzzing, kind of [a] grinding sound," Mark Springer said.

Mark Springer said the pilot then announced there was a mechanical issue.

"The pilot comes back on and says, ‘Uh, there’s a problem with the engine on the airplane,’" the passenger added. "'We can’t get it started.'"

'WE THOUGHT WE WOULD DIE': PASSENGERS THROWN INTO CEILING DURING TERRIFYING FLIGHT

After the delay, the plane finally departed. But about 15 minutes into the flight, passengers experienced a sudden jolt that sent them lunging forward, according to Mark Springer.

"All of a sudden, the plane just felt like it hit a ... like in a car, when you slam on your brakes. ... Everybody kind of lunges forward like this," he said.

"And then, maybe a minute later, the plane just kind of goes boom and drops. … All of the oxygen masks fall. And we just kind of looked at each other like, is this serious? Is this real?" added Mark Springer.

Tessa Springer recalled fearing for her life as the plane turned back toward the airport, telling First Alert 4 she was terrified she would die.

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She texted her children, "Problem on our plane, love you guys," per the outlet.

"I was like, we’re going to die," Tessa Springer said.

The couple said that once they landed, they evacuated the plane by jumping from its wing, with fellow passengers helping catch one another as they made their way to the ground.

"I don’t think I’ll ever be able to get on another airplane ever again," Mark Springer said.

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Despite the frightening ordeal, Leff of "View from the Wing" said a lengthy delay due to a mechanical issue does not necessarily indicate that a flight is unsafe.

"Part of that delay is diagnosing, part of it's addressing it and part of it's getting all the paperwork right and just doing all the final readbacks and rechecks to make sure that everything is safe for departure," Leff said.

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"A long delay in and of itself is not a safety concern," he added.

Leff also noted that aircraft are equipped with multiple safety systems and emergency procedures designed to protect passengers when problems arise.

"There are tremendous redundancies of systems and emergency procedures in place, such that the cockpit crew immediately reacted, responded and got everyone on the ground and off the aircraft to safety," Leff said.

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"It's certainly not something that you want to go through — but even when something goes wrong, that doesn't mean that things end badly at all," he added.