A grand jury in Prince George’s County moved to indict a 26-year-old local police officer on Tuesday for allegedly causing his girlfriend’s 3-year-old son to suffer a concussion, WJLA-TV reported.

Francesco Marlett faces assault and child abuse charges after allegedly spanking the boy hard enough that he hit his head against a wall and lost consciousness during the December 2015 incident.

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“There is no excuse for Officer Marlett’s actions,” said State’s Attorney Angela Alsobrooks. “No matter what may have happened, striking a defenseless child and causing this type of injury is never acceptable.”

The suspect reportedly got angry with the boy because he soiled his bed inside the home Marlett shares with the mother. She was allegedly in another room making a meal at the time.

According to the Washington Post, the boy’s mother came into the room and saw the suspect giving the boy CPR. He was later treated at a local hospital, where staffers contacted Child Protective Services.

Marlett was initially suspended with pay, but authorities now say he is still on suspension, just without pay. His initial court appearance has not been scheduled.