The bodies of 26 migrants thought to be from Myanmar or Bangladesh have been exhumed as authorities ended their search at a mass-grave site in Songkhla's border district of Sadao on Saturday.

"In total we have 26 bodies. As far as I know, one is a woman. We still cannot tell the cause of their deaths," said Police General Jarumporn Suramanee, head of the forensic team. "There are no more bodies. Every hole has been searched."

Forensic teams, helped by rescue workers, dug out badly decayed skeletons from shallow graves covered by bamboo and a few meters of dirt throughout Saturday at the abandoned jungle camp, AFP reported.