CHICAGO (STMW) – Police are warning South Side residents of an increase in strong-armed robberies in the Canaryville and Fuller Park neighborhoods.

The robbers approach people walking or getting in or out of their vehicles and take their property by force, according to a community alert from Central Area detectives. No weapons were displayed in any of the incidents.

The robberies happened about 7:05 p.m. in the 300 block of East 51st Street; about 8:20 p.m. in the 5500 block of South Blackstone Avenue; about 4:30 p.m. Feb. 29 in the 4500 block of South State Street and 9 a.m. in the 5500 block of South Cottage Grove Avenue, the alert said.

The descriptions of the robbers vary but are generally described as 18- to 25-year-old black men wearing a dark-hooded sweatshirt and dark pants, police said.

Anyone with information should call Central Area detectives at (312) 747-8382.

© Sun-Times Media Wire Chicago Sun-Times 2012. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.