(Portland, OR) -- A man accused of perpetrating a violent crime spree in Portland is to be arraigned today. Police say Israel Joseph Perez is facing numerous charges, including robbery and assault. Authorities say Perez was carrying a fake gun when he tried to carjack a driver in the West Burnside Street Taco Bell driveway Friday night. Perez is also accused of carjacking another vehicle at the Stadium Fred Meyer and carjacking a taxi in downtown Portland. Police tell KATU-TV he also swung a sledgehammer at people near the Jantzen Beach Target store.