A third suspect in a series of local robberies is now in custody. Prince William County Police have charged 22-year-old Arkei Shareef with robbery and assault by mob. He was arrested last Friday. Shareef (pictured) and two other men are accused of robbing male and female UVA students on the morning of November 16th in the city’s Venable neighborhood. During two of the incidents, the victims were beaten. Ahmad Glenn surrendered to city police late last year, and Dimeair Johnson was arrested in February in Upper Marlboro, Maryland.