Two Britons are being treated in hospital and 15 other people are missing after a tourist boat sank while it was travelling between islands in Indonesia.
The group was travelling between Lombok and the Komodo Islands in eastern Indonesia when the boat sank early on Saturday. Officials said survivors were not rescued until later that day.
Ten people were rescued, reportedly from New Zealand, Spain, France, Germany and the Netherlands, as well as the two Britons.
But the fate of the other 15 people on board, thought to be of various nationalities, has not yet been established. It is also unclear whether there were any more Britons on the boat.
A spokeswoman for the Foreign Office (FO) confirmed two British nationals have been hospitalised.
She said: "We are in contact with the local authorities about the incident and stand ready to offer consular assistance to any other British nationals who may be involved."
The FO would not comment on the state of their injuries.
Additional reporting by agencies