An employee of Rite Aid and two friends were arrested overnight in a plot to rob the Augusta pharmacy as it was closing Thursday night, authorities said.

Angelica Rouse (left) was armed with a knife when she walked into the Walton Way store at closing time and demanded money from the assistant manager, sheriff’s Lt. Calvin Chew said. The woman got money and then fled the store.

Deputies responding to the robbery caught the 20-year-old woman and an accomplice, 19-year-old Nicholas Mason (right), on Chafee Street, behind the pharmacy.

During the investigation, authorities discovered the suspects had conspired with Rite Aid employee De’Michaels Glover (middle) to commit the robbery, Lt. Chew said. In fact, Glover was working at the time of the robbery.

Rouse, of Castelina Drive, North Augusta; Mason, of Central Avenue, Augusta, and Glover, 20, of Shadow Ridge Drive, Augusta, were arrested and committed to the Richmond County Jail,  each on the charge of armed robbery.