The Las Vegas Visitors and Convention Authority says Las Vegas will lose an estimated $6.5 million in non-gambling revenue with the cancellation of the April sixth heavyweight title fight between American Mike Tyson and Lennox Lewis of Britain.

Nevada boxing regulators voted Tuesday not to grant Tyson a license to fight based on his questionable behavior inside and outside the ring.

Marc Ratner, the executive director of the Nevada Athletic Commission, says he was aware of estimates of the fight's economic impact on Las Vegas that reached as high as $100 million with gambling revenues included.

The MGM Grand hotel-casino was expected to be the venue of the much-anticipated boxing match. Despite the loss, MGM Grand executives say they support the commission's 4-1 decision to deny Tyson a boxing license.