A man from Dover is behind bars after a violent encounter at the Willowbrook Mall in Wayne.
Police say 50-year-old Orlando Ocampo Gallo was accused of stealing perfumes at the Macy's on Saturday.
When workers tried to stop him, he allegedly headbutted and bit them before pulling out a knife.
During the arrest, officers say they found two fake Social Security cards and a fake green card.
He is facing charges of robbery and assault.