A Maryland man has pleaded guilty to fatally punching his infant son, then leaving him in the back of the hearse for a day.

According to WJLA, authorities claim that Antoine Petty, 32, became enraged in September when his 2-month-old son wouldn't stop crying, so he punched him several times, killing the baby. Petty then left the boy's body in his car – a hearse – for a day, police said.

He and the child's mother, 24-year-old Geneice Petty, later drove to a nearby high school, where they buried the infant in a shallow grave on Sept. 22, 2016, authorities said. WJLA reported that the parents eventually led police to the area where they hid the body.

Antoine Petty could get 40 years behind bars after he pleaded guilty to a charge of child abuse causing death, WJLA reported. His lawyers reportedly did not enter a plea deal, and prosecutors say that they're going to push for the lengthiest possible sentence.

Geneice Petty will appear in court later this year to face an involuntary manslaughter charge in the incident.

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