BANGKOK, March 11 (Reuters) - Thai police said on Wednesday they had found four more bodies trapped in a tourist diving boat that sank off the island of Phuket at the weekend, and two other people were missing.

"We have to recover the bodies tomorrow because the boat was 50 metres below the surface," Colonel Viset Ketphun of the Tourist Police told Reuters.

Rescuers found the body of an unidentified foreign female on Tuesday. The other missing people were reported to be Japanese, Swiss, German and Austrian tourists, along with a Thai cook from the boat.

The boat overturned in bad weather around the Similan Islands on Sunday night. There were 23 survivors.

Phuket is one of Thailand's top tourist destinations, especially popular with divers.