CLAREMONT, N.H. (AP) – A gas station robbery this week was an inside job, police say.

Officers have arrested a gas station clerk, her boyfriend and another man, accusing them of staging an armed robbery at the Pleasant Street Mobil late Wednesday night.

Early Thursday, a police dog and tips lead police to James Oberfeldt, 22, of Claremont. But police say after questioning Oberfeldt, they arrested the clerk, Amber Johnson, 21; of Newport and her boyfriend, Steven Stone-Dow, 29 of Claremont. Stone-Dow also is a friend of Oberfeldt.

Johnson was working Wednesday night and called police to report a man with a knife and wearing a mask had robbed her.