A Maryland man has pleaded guilty in the death of his infant son.

The Prince George’s County State’s Attorney’s office announced on Aug. 2 that Antoine Petty, a resident of Upper Marlboro, Md. pleaded guilty to first-degree child abuse resulting in the death of his 2-month-old son in September.

Antoine Petty (Prince George’s County Police Department)

Prosecutors say when the infant started crying and Petty’s wife couldn’t calm him, Petty took him outside and hit him. The infant showed signs of distress and later died. The couple left the baby in their car for 24 hours, then buried him in a shallow grave. His body was found about a month later.

Antoine Petty faces up to 40 years in prison at sentencing in October. His wife, Geneice, is awaiting trial on involuntary manslaughter and accessory after the fact to first-degree murder charges.