Two armed robberies occurring within minutes of each other have led police in New Rochelle to institute a manhunt for the people responsible. Authorities believe the same group of men may have perpetrated both attacks on Friday night.Police say three men dressed in black attempted to rob a victim at gunpoint near Clinton Place and North Avenue. Another armed robbery was reported within 20 minutes at Main Street and Stephenson Boulevard. The locations are only blocks apart. The second incident also reported three male suspects ? this time brandishing a silver caliber revolver. Authorities say no one was harmed in either attack. Police say they are currently investigating both cases. Anyone with information is urged to contact New Rochelle Police at 914-654-2230.