A British woman has died, and a man is missing after a speedboat reportedly hit a rock and capsized in Thailand.
Another British national was injured in the accident near Koh Samui on Thursday afternoon, the Foreign Office said.
The missing man, named by police as Jason Robert Parnell, was in Thailand with his wife Puga Parnell, who is said to have been unhurt by the incident.
There were 32 passengers and four crew on the boat which was travelling from Mu Ko Ang Thong National Park when it capsized, the Bangkok Post reported.
A second woman from Hong Kong also died, while a German woman is also missing, police added.
A senior police spokesman told the Press Association: "We're still trying to check everyone. One British woman has died and one from Hong Kong. Two people are missing."
He added that the bodies of the two women have been recovered from the sea.
A second woman from Hong Kong also died, while a German woman is also missing, police added.
A senior police spokesman told the Press Association: "We're still trying to check everyone. One British woman has died and one from Hong Kong. Two people are missing."
He added that the bodies of the two women have been recovered from the sea.
A spokeswoman for the Foreign Office said: "We are supporting the family of a British woman who has sadly died following a boat accident near Koh Samui, Thailand.
"Another British national has received treatment in hospital for injuries suffered in the same incident.
"We remain in contact with local authorities in Thailand for further information."
It is believed there were other British people on board the boat but they are understood to have been released from hospital following treatment for any injuries they sustained.
Koh Samui is among the most popular Thai island destinations for backpackers and luxury holidaymakers alike, and is known for its beautiful beaches, coconut plantations and waterfalls.