NAIROBI:A fire engulfed Kenya’s main airport on Wednesday forcing the closure of a vital travel and trade gateway to east Africa.

Flames from the inferno lit up the early morning sky, and the intense heat repeatedly drove back firefighters. A huge plume of black smoke billowed from the airport buildings, but there were no immediate reports of casualties or injuries.

Hundreds of passengers were stranded outside Jomo Kenyatta International Airport in the capital Nairobi, which was cordoned off to keep the public out after the fire started early in the morning in the arrivals and immigration area, officials said.

The cause of the worst fire in record at east Africa’s busiest airport was not yet known.

“We are still fighting to contain the fire. Investigations will start immediately after,” Michael Kamau, cabinet secretary for transport, told reporters at the airport.

“The fire started at a very central part of the airport and this made access difficult. But we have closed the airport indefinitely as we try to contain the fire.”

One passenger at the airport said he heard two small explosions from the international arrival area, then sirens.

“I was waiting for my flight around 5 a.m. (0200 GMT / 10:00 p.m. Tuesday EDT) when I heard two explosions, as if from gas cylinder or electricity fault,” said the passenger, a Kenyan who requested anonymity.

“Within minutes, the entire airport was secured by police and Kenya airport authority personnel, who ordered everybody out of the airport,” he said.

The airport buildings were ravaged by the fire. Television pictures showed desks that had been reduced to charcoal inside the burned out terminal. The roof had partly caved in, and the floor was flooded with water from fire fighters.

Transport secretary Kamau said no plane had landed or departed since the fire started, and said he could not give any indication of when the airport would reopen. Airlines that wanted to take off without passengers have been allowed to do so, he said.

Thailand: The toll from a blaze that swept through a camp in northern Thailand has risen to 42, a Thai official said Saturday, after hundreds of temporary homes for refugees from Myanmar were reduced to ashes.

Dozens of people were injured in the fire, which broke out on Friday at the Mae Surin camp in Mae Hong Son province, with women, children and the elderly believed to make up the majority of the victims.

Rescue workers were on the scene at the remote mountainous camp area, Mae Hong Son provincial governor Narumol Paravat told AFP by telephone.

“The latest death toll we can confirm through military walkie-talkies is 42,” she said, adding the toll was likely to rise further as rescue workers search the area.

Authorities believe the fire was sparked by an unattended cooking flame.

A local district official said hot weather, combined with strong winds caused the fire to spread quickly among the thatched bamboo shelters.

Police on Saturday said around 400 temporary homes had been incinerated, while the Disaster Prevention and Mitigation Bureau said a school, clinic and two food warehouses had also been destroyed.

The Thai government pledged an investigation into the fire at the camp, which houses roughly 3,700 refugees.

Ten camps strung out along the Thai-Myanmar border house a total of about 130,000 people, who first began arriving in the 1980s.

Many of the refugees have fled conflict zones in ethnic areas of Myanmar, also known as Burma.

Families often live cheek-by-jowl in simple bamboo-and-thatch dwellings.

Many of the camp residents have been registered with the UN as refugees, and an ongoing resettlement programme has allowed tens of thousands to move to third countries.

After a new quasi-civilian government replaced the long-ruling junta in Myanmar two years ago, Thailand announced it wanted to shut the border camps, raising concern among their residents.

But so far the displaced residents have been allowed to stay and the Thai government has stressed that it will only send them back when it is safe.

Many of the refugees are from Myanmar´s eastern Karen state, where a major rebel group, the Karen National Union (KNU) signed a ceasefire deal with the new regime last year after decades of civil war.

Vast numbers of people fled the former Myanmar junta´s counter-insurgency campaign, which rights groups say deliberately targeted civilians, driving them from their homes, destroying villages and forcing them to work for the army.