The Chicago Tribune reports the victim, identified as Sircie Varnado, was confronted by a Walgreens store managerfor allegedly stealing feminine hygiene products.

Suddenly, a man claiming to be an officer intervened, drew his weapon and fired upon the 46-year-old. Varnado and the phony officer exchanged words before the fatal shots were fired 11:30 June 13. He reportedly shot the woman in her head and she was later pronounced dead at Mt. Sinai Hospital.

The unidentified gunman, then, fled the scene in a dark-colored SUV, police said.

Family members close to the victim are demanding answers. Varnado’s sister and niece believed the fatal shooting could have been avoided.

Chicago Police are now in contact with the gunman. According to CBS Chicago, the fake cop is an “unofficial security guard” at North Side Walgreens location. The suspect does have a valid Firearm Owners Identification (FOID) card and concealed carry license. He is identified only as a Black man — other information, including his name, has yet to be released.

Reed maintains her sister should still be alive. Other options such as Tasing could have been utilized to subdue her if Varnado committed a crime.

The security guard has had prior run-ins with the law, reports The Chicago Tribune. Last year, the man exchanged words with a woman in a White Castle on the South Side. The security guard reportedly threatened to kill the 24-year-old woman and her niece during the altercation over a receipt. “I’m a police officer. Meet me outside. See what’s gonna happen,” the report read.

A Walgreens spokesperson told CBS Chicago the company will cooperate with police throughout the investigation.

“We are committed to providing a safe environment for our employees, patients and customers in the communities we serve,” the company said in a statement.

The gunman has not been criminally charged.