CHICAGO (STMW) -- Police are warning of two recent armed robberies at businesses in the same block last week in the West Side Austin neighborhood.

In both incidents, the robber showed a handgun and demanded money from the register, according to a community alert from Chicago Police.

Both robberies happened in the 6000 block of West North Avenue, police said. One robbery happened about 8:35 p.m. Nov. 12, while the other happened about 8:45 p.m. Nov. 13.

The robber is described as a black man, between 25 and 30 years old, standing about 5-feet-10, wearing a black zipped-up hooded sweatshirt with a tattoo by his right eye, police said.

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

(Source: Sun-Times Media Wire © Chicago Sun-Times 2015. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)