According to Chicago police, Harrison District officers were on routine patrol around 7:40 p.m. Monday when they saw a car matching the description of a vehicle involved in an earlier shooting. Police said when officers tried to stop it, a young man ran out of the car, and an officer gave chase.

“A foot pursuit ensued, and during the course of that pursuit led to an armed confrontation between the offender and the officer, resulting in the officer firing shots with his service weapon,” Chicago Police Chief of Detectives Eugene Roy said.

Pierre was taken to Mount Sinai Hospital, where he was pronounced dead less than an hour later.

Witnesses said Pierre was shot while he was jumping over a fence.

Police said a gun was recovered at the scene, but his mother disputed that.

“No, he didn’t have a gun, but they saying he did after the fact,” Hudson said.

Relatives gathered at Pierre’s home Tuesday morning, still trying to make sense of the shooting.

Update: CHICAGO — The mother of a teenager who was fatally shot by Chicago police last week is suing the city and two officers.