BOSTON (CBS) – A Boston man is under arrest following an armed robbery on Beacon Hill that may have involved a stun gun.

Police say just after midnight Friday, a man was walking on Revere Street when someone came up and grabbed from behind.

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During an ensuing struggle, the victim says the suspect, later identified as Yohan Almonte, 24, was swinging an object at him that had a blue light on the end of it and appeared to be a stun gun.

The victim managed to escape without being hurt.

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He gave police a description of his attacker.

Officers spotted Almonte, who fit that description, nearby a short time later. Almonte took off running but police quickly captured him.

He is charged him with Armed Robbery.

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It’s unclear whether any weapon was recovered.