Dormont police arrested a Pittsburgh police officer accused of assaulting his girlfriend Sunday night.

Officer Michael J. Flynn, 35, has a preliminary hearing scheduled for April 11 on the simple assault charge.

Pittsburgh police spokeswoman Diane Richard said Flynn, who joined the force in 2007, was transferred to the department's warrant office on Monday. The department's Office of Municipal Investigations is reviewing the incident, she said.

“The incident is under current investigation,” acting Police Chief Regina McDonald said in a statement.

Dormont police officers went to a home on Beacon Hill Avenue just after 5 p.m. Sunday at the urging of Zone 5 Cmdr. Timothy O'Connor, according to a criminal complaint.

Jennifer McGurk told officers Flynn pushed past her into her home about 3 a.m, and became angry, pulling her off her bed and throwing a decorative stone.

McGurk told officers she did not want Flynn arrested, but the Allegheny County District Attorney's Office told the officers to proceed with the charges, the complaint said.

“Police protocol in domestic violence situations and our protocol as well is to make an arrest if an injury is witnessed or observed and a domestic partner is believed to be responsible for inflicting the injury,” said Mike Manko, spokesman for the DA's office.

Channel 11’s news exchange partners at TribLIVE contributed to this report.