SANTIAGO >> All five trapped workers at Codelco’s El Teniente copper mine have been found dead, a regional prosecutor said on Sunday, after rescue teams cleared more than two dozen meters (78 feet) of underground passages that collapsed in a strong tremor last week.

Some 100 people were involved in search for workers at El Teniente copper mine, the world’s largest underground mine.

The accident, which took place on Thursday, was caused by one of the largest tremors ever recorded at El Teniente, with the impact of a 4.2 magnitude quake.