Four of the five workers trapped in a Chilean copper mine that partially collapsed this week have been found dead, authorities said Sunday, as rescue workers continue their search for the remaining miner trapped in the debris.

Officials say that a worker was killed and five others remain trapped underground after a collapse at a copper mine in Chile.

Rescuers have recovered the bodies of four miners and are searching for two more after an earthquake caused a partial collapse at El Teniente mine last week.