A man has been indicted on first-degree murder and other charges in last month's shooting of a New York Police Department officer.

Queens District Attorney Richard Brown announced the indictment of Demetrius Blackwell on Thursday in the death of Officer Brian Moore.

Moore died May 4, two days after being shot in the head while attempting to stop a man suspected of carrying a handgun.

Authorities had said Moore and his partner were in an unmarked police car when they approached Blackwell in a quiet Queens neighborhood after seeing him adjusting his waistband. Police say they exchanged words before Blackwell suddenly turned, pulled out a weapon and fired.

The 25-year-old Moore was the son, nephew and cousin of police officers.

Blackwell's attorney has said he denies the charges.