This is the moment a bus powered by natural gas burst into flames seconds after a mechanic opened the tank.

The vehicle, which uses low-cost NGV gas, was being checked over at a garage in Singburi, Thailand on Wednesday (August 21) afternoon.

Mechanic Warintorn Boonlert, 49, said when he removed the valve of the tank there was an explosion followed by a fire.

Firefighters arrived and spent an hour tackling the inferno. The bus and a second coach parked next to it were both ravaged.

Warintorn said: "The bus was installed an NGV gas tank and I tried to opened it, but then it exploded.

"I jumped from the bus and ran from the explosion. After I figured out what was happening, I grabbed the fire extinguisher but the fire was already getting too big.

"I contacted the firefighters after I realised that it was beyond my control. I am so upset that the fire has spread to other cars with me unable to do nothing."

Police Major Worachai Srichai came and investigated the scene. He said: "Initially the damaged cost over two million baht.

"However, it was good that there was no injury, and we will investigate further for the caused of the fire."

This is the moment a bus powered by natural gas burst into flames seconds after a mechanic opened the tank.

The vehicle, which uses low cost NGV gas, was being checked over at a garage in Singburi, Thailand on Wednesday (21/08) afternoon.

Mechanic Warintorn Boonlert, 49, said when he removed the valve of the tank there was an explosion followed by a fire.

Firefighters arrived and spent an hour tackling the inferno. The bus and a second coach parked next to it were both ravaged.

Warintorn said: "The bus was installed an NGV gas tank and I tried to opened it, but then it exploded.

"I jumped from the bus and ran from the explosion. After I figured out what was happening, I grabbed the fire extinguisher but the fire was already getting too big.

"I contacted the firefighters after I realised that it was beyond my control. I am so upset that the fire has spread to other cars with me unable to do nothing."

Police Major Worachai Srichai came and investigated the scene. He said: "Initially the damaged cost over two million baht.

"However, it was good that there was no injury, and we will investigate further for the caused of the fire."