SANTIAGO: At least one worker was killed and five others were missing after a copper mine collapse in Chile triggered by an earthquake on Thursday, state-owned operator Codelco said.

Nine others were injured — none critically — after the magnitude 4.2 earthquake struck at 5:34 p.m. (2134 GMT) in the world’s largest underground copper mine, El Teniente (“The Lieutenant“), Codelco said.

“Codelco reports the death this afternoon of our colleague Paulo Marin Tapia,” it said in a statement.

El Teniente is located in the city of Rancagua, about 100 kilometers (62 miles) from the capital Santiago.

The United States Geological Survey reported a shallow magnitude 5.0 earthquake about 35 kilometers from Rancagua at 2134 GMT.