When Christina Warner looked up, the man ducked down.
She was with sorority sisters and police on a Citizens on Patrol safety walk Tuesday night on Guilford Avenue. He was on the roof of a rowhouse in Charles Village. She thought it seemed suspicious.
The 21-year-old Johns Hopkins University senior told a Baltimore officer, who called in squad cars and a helicopter with a spotlight, and the man was quickly arrested three stories above the street.
Warner's quick thinking helped police arrest a man they had been looking for since September on suspicion that he'd broken into a house in Charles Village occupied by Hopkins women's lacrosse players. The man has a string of convictions dating back three decades and had been released from prison two months ago.