A man was killed in a fireworks explosion Monday in the South Side Ashburn neighborhood, police said.

Juan Acevedo, 53, suffered head injuries from a fireworks accident about 3:55 p.m. in the 3900 block of West 85th Street, Chicago police and the Cook County medical examiner’s office said.

Acevedo, who lived on the same block, was pronounced dead on scene, authorities said. Police bomb and arson units responded.

An autopsy released Tuesday found Acevedo died of head injuries from a fireworks accident, the medical examiner’s office said.

Area South detectives were conducting a death investigation.