Mount Prospect police responded about 3:15 a.m. Sunday to an armed robbery outside at the Colonial Green Apartments, 2000 West Algonquin Road, Mount Prospect. First offender described as a male/black, 5’8″ medium build wearing a black T-shirt and blue jeans. The second offender was described as a male/Hispanic, 5’8′ thin build, wearing a black-and-white polo shirt with horizontal stripes and blue jeans. The third offender was described as a male/Hispanic, 5’8″ heavyset, wearing a black baseball hat and white T-shirt. The robbery is reported to have occurred at the tennis courts.