A landslide in an unauthorized gold mine in Bolaang Mongondow regency, North Sulawesi, on Tuesday night has buried at least 60 miners, the National Disaster Mitigation Agency (BNPB) said.

BNPB spokesperson Sutopo Purwo Nugroho said the landslide occurred at 9 p.m. when the mine’s supporting beams and planks collapsed on account of unstable soil conditions.

“As of 5 a.m. local time, 14 people have been evacuated with one dead and 13 injured,” Sutopo said in a statement on Wednesday.

He said recovery efforts were still ongoing as many of those buried were thought to still be alive.

He added that the Bolaang Mongondow BNPB was coordinating with the local police, military command,and search and rescue agency to recover the buried miners.