Police warn of strong-arm robberies in Logan Square

CHICAGO (WLS) -- Chicago police are warning residents about a series of strong-arm robberies on Chicago's Northwest Side.

The attacks happened in the 2800-block of N. Albany and in the 2700-block of N. Francisco in the early evening hours.

Police say four suspects are carrying out the attacks. Victims are hit from behind, knocked down and then robbed. The suspects wore surgical masks in one incident.

Police are urging residents to be aware of their surroundings and if confronted, to comply with their demands.