An armed security guard employed at a North Patchogue jewelry store was arrested Friday evening and charged with first-degree reckless endangerment after firing a round during a dispute, Suffolk County police said.

Zahid Raja, 37, of Selden, fired his handgun at 5 p.m. on the premises of the store, Gateway Jewelry Exchange, at 499-13 Sunrise Hwy. North Service Rd.

Raja was intervening…