On Monday, police released surveillance video of the robbery, which happened late last month.
Police say a woman and two men walked into the store on Richmond Street, scoured the aisles for goods and then stuffed them in a backpack.
An employee blocked them from leaving and that's when the woman allegedly bit the worker in the arm to escape.
Anyone with information is asked to contact Philadelphia Police at 215-686-TIPS (8477), text a tip to PPD TIP (773847) or through PhillyPolice.com.
