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.

Rescue teams have found a body inside a section of a Chilean copper mine that collapsed during a moderate earthquake.

Chilean copper giant Codelco has halted mining at its flagship El Teniente mine and postponed its quarterly results announcement as it continued efforts on Friday to reach five trapped workers following a deadly collapse.