Dozens of workers are trapped underground after a tunnel caved in at a giant US-owned gold and copper mine in Indonesia's eastern-most province of Papua, police said.
A search is under way but the fate of up to 30 trapped workers remained unclear, he said.
A written statement from PT Freeport Indonesia, a subsidiary which runs the mine, said a tunnel in the underground training area collapsed. It did not say how many workers were involved or whether there were injuries or fatalities.
The province holds some of the world's largest gold and copper reserves.