A Riverhead man was arrested on assault, weapon and drug charges after he hit another man in the head and face with a glass bottle during an altercation at a bar late Saturday in Flanders, police said.

Southampton Town police said Sergio R. Mendoza-Baquiax, 23, was arrested after the attack at Ranchero Latino on Flanders Road at 11:40 p.m. He was charged with second-degree assault, fourth-degree criminal possession of a weapon and seventh-degree criminal possession of a controlled substance. Arraignment details were not immediately available on Monday.

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Police said that officers responding to the call about a brawl at Ranchero Latino said six “intoxicated males” were involved in a verbal dispute that “escalated into a physical altercation,” ultimately seeing Mendoza-Baquiax pick up a bottle and strike one of those involved. The victim required emergency medical treatment at Peconic Bay Medical Center in Riverhead, police said. Police said the injuries were not life threatening.

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Mendoza-Baquiax was arrested at the scene. None of the others involved in the incident were arrested or named.