Delaware State Police are investigating a robbery at the Dollar Tree on Faulkland Road in Wilmington Thursday night.

Police say the incident occurred at 6:30 p.m. when the suspect entered the store and loitered in the area around the cashier. After the 19-year-old female cashier waited on a customer, the suspect walked behind the counter, pushed the cashier, and removed money from the still-open cash register. The suspect then ran out of the store.