Police are warning business owners in Irving Park of a pair of robberies to restaurants reported last month on the Northwest Side.
In each case, the suspect walked into a restaurant, displayed a gun and demanded cash from the register, Chicago police said.
A robbery happened at 9:06 p.m. Aug. 11 in the 3100 block of West Addison Street, police said. Another occurred at 3:55 p.m. Aug. 24 in the 3600 block of West Irving Park Road.
The suspect was described as a man between 23 and 40 years old standing 5-foot-9 and weighing 190 pounds, police said.
Anyone with information is asked to call Area Five detectives at 312-746-7394.
