New Delhi, Dec. 9 -- A Mexican National Guardsmen shot and killed three fellow service members at a barracks over the weekend in the western Mexican state of Michoacan, where the government has surged security forces in the wake of recent high-profile killings.

A federal official confirmed the shooting Monday to The Associated Press, requesting anonymity because they were not authorized to discuss it publicly. The shooting, which wounded a fourth service member, was under investigation, the official said.

The suspect was in custody in Michoacan.

The shooting occurred Saturday hours after a car bomb exploded in Coahuayana, Michoacan, killing five people outside a local police station.

President Claudia Sheinbaum declined to give more d...