Richard J. Caprarella, 55, also threatened two clerks at the store with physical force while committing the theft, police say.
He is charged with robbery in the incident, which occurred on Sept. 9.
Caprarella is wanted by multiple other law enforcement agencies on outstanding warrants, police say.
He may be operating a gray Toyota Highlander with Pennsylvania registration FGS1544.
Anyone with information on his whereabouts is asked to contact Ephrata Police at (717) 733-8611.
