A man standing outside an East Rockaway bar had his neck slashed Wednesday morning during a dispute with two other men, Nassau County police said.

The 23-year-old man, whose name was not released, was outside Mr. Beery's of East Rockaway at 451 Atlantic Ave. when the confrontation occurred about 3:50 a.m., police said.

The men "became involved in altercation," and one of them slashed the victim in the neck with an unknown object, police said. The injured man was treated at a hospital for lacerations to his neck, police said.

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The nature of the dispute was not known. The two other men were described as about 20 years old, with thin builds and about 5 feet 8 inches or 5 feet 9 inches tall. The attacker was wearing a camouflage cap, police said.

Police asked anyone with information about the attack to call Crime Stopper 800-244-TIPS [8477].