GLENDALE, Ariz. -- A man and three teenagers are in custody in connection with a string of violent robberies in west Phoenix and Glendale.
Information developed by Glendale and Phoenix police led them to a vehicle believed to be associated with the robberies.
Detectives began surveillance on the vehicle and served a search warrant on two apartments.
Police say 36-year-old Ruben Torres, two 17-year-old boys and another juvenile were arrested.
The four are facing numerous charges of robbery, attempted robbery and aggravated assault. Police say the teens are being charged as adults in the case.
Police say Torres and the three juveniles are suspected in five different cases involving eight victims in Glendale and four cases involving seven victims in Phoenix.
Some of the victims were robbed at knifepoint and one was stabbed.