CHICAGO -- Police are warning residents of two recent armed robberies on the Near North Side.In both incidents, three males walked up to a victim on the street in the evening hours, produced a black, semi-automatic handgun and demanded the victim's property, according to a community alert from Chicago Police.The most recent armed robbery happened Feb. 21 in the 800 block of North Franklin, while the other incident happened Feb. 9 in the 100 block of West Oak, police said.The suspects are described as three black males, thought to be in their late teens to early 20s, police said.Anyone with information on in the robberies is asked to contact Area Central detectives at (312) 747-8382.