ALLENTOWN, Pa. -

Police in Allentown say they nabbed a robber--just minutes after he hit a store.

According to authorities, 41-year-old Erick Contreras robbed the Pet Supplies Plus store in the 1000 block of Union Boulevard around 5:15 p.m. Saturday.

Police said an alert officer who was on patrol noticed Contreras acting suspiciously.

Contreras was expected to have been arraigned Saturday night.