Assault charges have been dismissed against John Mara, nephew of New York Giants owner John Mara, after a state prosecutor admitted in Superior Court that Fairfield police arrested the wrong man in connection with a fight at a local New Year's Eve party.

Mara, 22, of Mount Kisco, N.Y., turned himself in to Fairfield police in February after a warrant was issued for his arrest.

The charges stemmed from a New Year's Eve party on Fairfield Beach Road, according to the warrant. Mara was charged with striking a person over the head with a bottle, police said, causing life-threatening injuries that required immediate surgery.

Mara faced charges of first-degree assault and second-degree breach of peace. The name of the victim was not released.

The arrest followed a two-month investigation by police.

But on Friday, the charges were dropped after State's Attorney John Smriga said in Bridgeport Superior Court that police had arrested the wrong man.

William Dow, Mara's lawyer, said in a statement: "All charges have now been dismissed. From the very beginning Jack Mara swore he was innocent. He did not assault the complainant. The evidence has proven his innocence.

"We are gratified that the state has agreed and that the charges are dismissed.

"Jack is an outstanding young man and has a bright future. He and his family intend to move on from this unfortunate incident."