CHICAGO (CBS) — Chicago police are warning businesses in the 14th police district on Chicago’s Northwest Side of an armed robbery and a recent attempted robbery.

Police say in both incidents a man, armed with a knife with a red handle, went into a pharmacy and demanded money. In one case he successfully took money from the store. He fled the scene in both incidents.

READ MORE: Fulton Labs, New Biotech Startup In Fulton Market, Aims To Grow Chicago's Biotech And Life Sciences Industry

The incidents happened in the 2400 block of West North Avenue on Sept. 2 at 7:20 a.m. and about 17 minutes later in the 1300 block of North Milwaukee Avenue.

READ MORE: New Mobile COVID-19 Vaccine Sites To Target CPS Students, Families

Police said the suspect is described as a black man between 28 and 38 years old, between 6 feet and 6 feet 2 inches, and between 180 and 200 pounds. He has brown eyes, black hair and a dark brown complexion. He was wearing a face mask.

MORE NEWS: FBI Seeking Public's Help Finding Devontay Anderson; Feds Say Third Suspect Charged In Killing Of Jaslyn Adams Fled State To Avoid Prosecution

Anyone with information is asked to contact Area Five detectives at (312) 746-7394.

CBS 2 Chicago Staff