Boston Police report officers on patrol around 4:30 this morning spotted four males beating up a fifth at Savin Hill Avenue and Tuttle Street.

Police say the four took the victim's cell phone and wallet and left him with facial cuts and bruises. Officers were unable to find either, at least until they got the four to District C-11, where the wallet had appeared in the back of the prisoner transport vehicle.

Alfonso Rivas, 19, Alex Diaz, 18, Angel David, 18, and a 16-year-old were all charged with armed robbery.