A man was killed in a shooting that injured a Chicago police officer in Humboldt Park on Thursday night.

Just after 10:30 p.m., Chicago police said tactical officers tried to stop a man in an alley in the 4300 block of West North Avenue. As officers approached, police said the man took off running into a backyard.

Police said when officers caught up to him and tried to detain him, the man's gun went off, hitting the police officer in the leg. Police said the officer then fired back, hitting the man.

Surveillance video shows what appears to be an unmarked patrol car come down the alley and about 30 seconds later a man comes into frame. That man appears to get spooked before running away.

A few minutes pass before another unmarked patrol car parks by the alley's entrance. An officer gets out and runs down the alley. Moments later more officers arrive and can be seen dragging the officer out of the alley and into his patrol car.

The man was taken to Mt. Sinai Hospital, where he died. A source told CBS News Chicago he was shot in the head, shoulder and twice in the chest.  The Cook County Medical Examiner's office identified him as 19-year-old Nathaniel Fejerang.  

A check conducted by CBS News Chicago found he did not have a criminal record.

Chicago police said a gun was recovered at the scene.

The Chicago police officer was rushed to Stroger Hospital in serious condition with a gunshot wound to the leg. He was released from the hospital around 1:30 p.m. Friday. CPD officers lined up outside the emergency room and applauded when he walked out on his own instead of using a wheelchair.

The officer hugged some of his colleagues before he was driven away from the hospital.

The Civilian Office of Police Accountability is leading the investigation into the shooting, and the officers involved will be placed on administrative duties.