A St. Joseph man was charged in the death of his 7-week-old son.

Cmdr. Jim Connors of the St. Joseph Police Department said 52-year-old Ronny Rathman was charged Friday night with second-degree murder in the death of Donald Rathman.

Connors said Rathman was taken into custody Thursday evening after officers were called to a hospital on a report of child abuse. The baby was pronounced dead later that night.

Preliminary autopsy results show the child died from head trauma.