(CHICAGO) Police are warning businesses about a pair of armed robberies reported last week at cell phone stores on the city’s North and Northwest sides.

In both robberies, multiple people entered the stores and robbed them at gunpoint, according to a business alert from Chicago Police.

The first robbery occurred in the 1900 block of West Irving Park about 11:10 a.m. May 31, police said.

One of the suspects was described as a 25 to 30-year-old black man standing between 6 feet and 6-foot-3 and weighing 140 to 160 pounds, police said. He had dreadlocks and a dark complexion and was wearing a red hooded sweatshirt, an orange construction vest jacket, a white hard hat and an air filter mask.

A second suspect was described as a 25 to 30-year-old black man between 5-foot-11 and 6-foot-2 who weighs 140 to 160 pounds, police said. He was also wearing a white hard hat, an orange construction vest and an air filter mask.

The second robbery, which involved three suspects, occurred about 7:40 p.m. on June 6 in the 1800 block of North Harlem, according to police.

The first suspect is described as a 5-foot-7 to 5-foot-9 black man between 22 and 26 years old, police said. He weighs 134 to 145 pounds, has dreadlocks and was wearing a red hooded sweatshirt and a yellow construction vest.

The second suspect is described as a black male of a similar height and weight to the first, police said. He had a fade hairstyle and wore a yellow construction vest, a black T-shirt and dark blue jeans.

There was no description of the third suspect, the driver of the getaway vehicle described as a burgundy Dodge Durango with no license plate, police said.

Anyone with information about the robberies is asked to contact Area North detectives at (312) 744-8263.