A crew member was reportedly filling diving tanks with oxygen when the equipment malfunctioned and fire engulfed the boat.

A British tourist is missing after a fire broke out on a dive boat off the island of Koh Tao in Thailand. Alexandra Clarke, 26, a backpacker from Lambeth, in London was reportedly using the toilet when the blaze started in the engine of the wooden vessel this morning.

British national Alexandra Clarke is reported missing after a fire breaks out on the diving boat she was travelling on off the coast of the island of Koh Tao on Sunday.

The tourist, a Lambeth resident backpacking in Thailand, was using the toilet when the engine of the wooden "Davy Jones Locker" boat erupted in flames near the island of Koh Tao on Sunday morning

A British tourist is missing after boat after a tourist boat was engulfed in flames off the Thailand coast. A small boat was taking tourists on a diving excursion near Koh Tao. Alexandra Clarke, 26 from London, is the only one missing after 20 other people were evacuated from the small boat.

A British tourist is missing after a fire ripped through a diving boat off the island of Koh Tao in Thailand. Alexandra Clarke, 26, from London, was reportedly in the bathroom at the back of the boat when the blaze started at 9.

A tourist missing in Thailand after a boat fire on Sunday has died, Bangkok Post has claimed. Backpacker Alexandra Clarke, 26 was enjoying a diving boat excursion when a sudden blaze ripped through the vessel.