Boxer and actor Mike Tyson stunned a wedding party in upstate New York over the weekend (24Aug13) when he showed up and agreed to pose for pictures with the bride and groom.

The champ was staying at the Turning Stone Resort Casino in Verona when stumbled upon Greg and Amber Keller's nuptials and decided to wish the newlyweds well.

The star, who has been married three times, was in Verona for his first promotional fight card featuring boxers from his Iron Mike Productions.

Greg Keller says Tyson was "extremely nice".