No charges will be filed in the fight two weeks ago between State Senator Mark Grisanti and his wife and several other patrons at the Seneca Niagara Casino in Niagara Falls.
The Niagara County District Attorney's office announced its decision Friday afternoon.
Police said video from the casino was inconclusive as to who started the fight.
Grisanti's wife Maria suffered a concussion in the fight. Grisanti said the fight started when he intervened in an argument between two Seneca Nation businessmen.