LOS ANGELES (AP) – A woman who allegedly fired pepper spray at other customers during a Black Friday sale has surrendered to authorities, Los Angeles police said Saturday.Police Sgt. Jose Valle said the woman who allegedly caused minor injuries to 20 shoppers at a Los Angeles-area Walmart turned herself in Friday night.She is currently not in custody but could face battery charges, Valle said. The woman’s identity was not released.The attack took place about 10:20 p.m. Thursday shortly after doors opened for the sale. The store had brought out a crate of discounted Xbox video game players, and a crowd had formed to wait for the unwrapping.