CHICAGO (CBS) — Police are questioning a person of interest in a deadly armed robbery last week at an Aldi grocery store in the Gresham neighborhood.

Around 7:20 p.m. Thursday, two armed men entered the Aldi in the 9000 block of South Halsted Street and pulled out handguns, announcing a robbery. One of the robbers shot and killed security guard Reginald Lanier, 54.

A 67-year-old woman who was leaving the store at the time was also shot in the leg.

The offenders took an undisclosed amount of cash and fled the store on foot and police have released surveillance images and video of the two suspects.

Police said they were questioning a person of interest in connection with the case and the investigation was ongoing as of Tuesday afternoon.

One of the suspects is described as a male black in his 20s or 30s with a medium build. The other offender is in his 40s or 50s, with a thinner build, and was wearing eyeglasses, police said in a community alert.

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