A former suburban Greenwood, MO, police chief who helped rescue a baby from an icy pond in 2018 and later assaulted the man accused of trying to kill the infant has pleaded guilty in the case.

Greg Hallgrimson, 51, pleaded guilty in federal court Wednesday, the Kansas City Star reported. He was indicted in 2019 on a single count of violating the civil rights of Jonathon Zicarelli, Associated Press reports.

Prosecutors have said Hallgrimson threw a handcuffed Zicarelli to the ground, punched him in the face and told Zicarelli, “You deserve to die,” after returning from the rescue mission to the Greenwood, Missouri, police station.

Zicarelli had walked into the police station in December 2018 and said he had tried to drown his 6-month-old daughter in a nearby pond, police said.

Zicarelli remains in Jackson County jail on pending felony charges of domestic assault and child abuse.