Kyle J. Clark, 21, and Thomas Jenkins, 19, are accused of robbing the employee after he had closed the shop for the night and was walking to his car with the store's bank deposits, police said.
Clark fled on foot and was quickly taken into custody, charged with first-degree robbery and remanded to Westchester County Jail without bail, police said.
State Police are still searching for Jenkins and are asking anyone with information to contact Investigator Sean J. Morgan at the Cortlandt Barracks of the State Police at 914-737-7171.
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