A 27-year-old Ephrata man was killed in an overnight explosion at a Berks County metal refinery plant.

Jacob Lopez was pronounced dead early Saturday morning by Berks County officials at the Timet plant on Hemlock Road in Morgantown.

The explosion occurred around 11 p.m. Friday night.

Lopez was a worker at the plant; several other people were injured.

A state police fire marshal and OSHA are investigating.