NEW YORK (CBSNewYork) – A man is under arrest for allegedly attacking a grocery store manager with a hammer in Chelsea, police said Monday.

Oscar Apronti, 27, was charged with assault, stalking and criminal possession of a weapon for the July 23 incident, according to the NYPD.

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Police said Apronti hit Ray Acevedo, 64, manager of the Gristedes at Ninth Avenue and 24th Street, in the head with a hammer.

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It happened after Acevedo took a picture of a homeless man known for causing trouble, CBS2’s Tony Aiello reported in July.

The man grabbed a hammer off the ground and smacked Acevedo on the head, police said. A good Samaritan tried to stop the suspect as he fled the scene.

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Apronti is also charged for a similar, unprovoked attack in April, when he was accused of hitting a deli worker.