Newly-released footage appears to show World Health Organization chief Tedros Adhanom Ghebreyesus running for safety at Yemen's Sana'a international airport as it was hit by Israeli strikes on Thursday.
Video from Al-Masirah, a television channel run by the Iran-aligned Houthi movement, showed a man which it said was Mr Tedros, seated in the airport's VIP lounge before being abruptly escorted out by others from the room.
This was the same day Israel conducted air strikes on Yemen, including the airport, after Houthis fired drone and missiles at Israel, in what they described as acts of solidarity with Palestinians in Gaza.
Reuters was able to independently verify the location by matching interior decoration and architectural details with file imagery.
Reuters was not able to independently verify the date nor the identity of the man said to be Mr Tedros. However, statements by the United Nations and Mr Tedros place him at Sana'a International Airport on Thursday.
Speaking afterwards, Mr Tedros said that he was not sure he was going to survive the air strike that he experienced, adding that he and his entourage were stuck in the airport for an hour after as drones flew overhead, feeding concerns that another attack would come.
Mr Tedros was in Yemen over Christmas to try to negotiate for the release of 16 UN staff, as well as employees of diplomatic missions and NGO workers held by the Houthis.
An Israeli statement said its targets included "military infrastructure" at the airport and power stations in Sana'a and Hodeida - a major entry point for humanitarian aid - as well as other facilities at several ports.
Houthis use these sites "to smuggle Iranian weapons into the region and for the entry of senior Iranian officials", the statement said.
But UN humanitarian coordinator Julien Harneis said the airport was "a civilian location" which the UN also uses, and the strikes took place as "a packed civilian airliner from Yemenia Air, carrying hundreds of Yemenis, was about to land".
Although the plane "was able to land safely... it could have been far, far worse", Mr Harneis said.
Despite the damage, flights at Sana'a airport have resumed.
Israeli military says missile from Yemen intercepted
The Israeli military said it intercepted a missile launched from Yemen early this morning.
Sirens sounded in areas of Jerusalem and the Dead Sea as "a missile launched from Yemen was intercepted... prior to crossing into Israeli territory", the Israeli military said.
Yesterday, a fresh air strike hit Sana'a, which Houthi rebels blamed on "US-British aggression" though it remains unclear who was behind it.
There was no comment from Israel, the United States or Britain.
The Iran-backed Houthis control large parts of Yemen after seizing Sana'a and ousting the government in 2014.
Since the eruption of war in Gaza in October last year, the Houthis - claiming solidarity with Palestinians - have fired a series of missiles and drones at Israel.
They have stepped up their attacks since November's ceasefire between Israel and another Iran-backed group, Hezbollah in Lebanon.
The Houthis have also attacked commercial shipping in the Red Sea, prompting reprisal strikes by the United States and sometimes Britain.
Earlier yesterday, before the strike on Sana'a, tens of thousands of people gathered to protest and express solidarity with Palestinians.
'Continue until job is done'
In his latest warning to the Houthis, Israeli Prime Minister Benjamin Netanyahu said Israel's strikes would "continue until the job is done".
"We are determined to cut this branch of terrorism from the Iranian axis of evil," he said in a video statement.
UN Secretary-General Antonio Guterres denounced the escalation in hostilities, and said bombing transportation infrastructure threatened humanitarian operations in Yemen, where 80% of the population depends on aid.
The United Nations has called Yemen "the largest humanitarian crisis in the world", with 24.1 million people in need of humanitarian aid and protection.
After the attack on Sana'aairport, Houthis said they fired a missile at Ben Gurion Airport outside Tel Aviv and launched drones at the city and a ship in the Arabian Sea.
The Israeli military said the same day a missile launched from Yemen had been intercepted.
Israeli "aggression will only increase the determination and resolve of the great Yemeni people to continue supporting the Palestinian people", a Houthi statement said.
