Police have arrested on Sunday the suspect behind the string of robberies in optical and dental clinics in the eastern part of Metro Manila and nearby areas. Eastern Police District (EPD) Director Elmer Jamias said Wilfredo Vidallo, 42, a former taxi driver, of San Miguel, Pasig City was about to execute another heist when collared along C. Raymundo St., Rosario, Pasig City. Vidallo is the subject of complaint by an owner of an optical shop in Sta. Lucia, Pasig City who was victimized last November 17. Jamias said Vidallo has robbed several optical and dental clinics by posing as patient, victimizing mostly female doctors. Recovered from the suspect were a hand grenade and a plastic sachet allegedly containing shabu.