CHICAGO — An attempted robbery suspect who was shot and killed inside a South Shore supermarket Friday evening — along with a witness who attempted to stop the robbery and was also killed in the shooting — have both been identified by a medical examiner.

At around 6:20 p.m., Chicago police said 24-year-old Nicholas Williams entered Elbarakah Super Market, located in the 2600 block of East 73rd Street, and produced a handgun in an attempt to rob the store.

At around the same time, 63-year-old, Ali Hassan of Berwyn who owned a valid FOID card, shot Williams in the chest.

Williams, who was later pronounced dead at the scene, fired back and shot the 63-year-old man in the chest and back.

Hassan was transported to University of Chicago Medical Center in critical condition and was later pronounced dead.

CPD said three handguns were recovered at the scene. It’s unknown how many patrons were inside the store at the time of the shooting.