FARGO (AP) - Fargo police say two suspects are in custody in the armed robbery of a convenience store.

Police say the 21-year-old man and 18-year-old woman were arrested shortly after 3:30 a.m.

A police statement says both suspects are from north Fargo. Police credit tips from people who saw video footage of the Stop-N-Go store robbery.

The store was robbed shortly after 6 a.m. Saturday. A clerk told police that a man and woman came into the store, waited for a patron to leave and then demanded money. The clerk said the man brandished a knife while the woman took money from the cash register.

Police say the clerk was not hurt.