Police fatally shoot gunman who killed 2 at Wisconsin casino Poll Better A State Patrol officer blocks the road in front of the Oneida Bingo and Casino in Green Bay, Wis on Saturday May 1, 2021 after reports of an active shooter. A spokesperson for a Wisconsin casino says an undetermined number of people have been shot at the casino. The Oneida Casino in Green Bay tweeted Saturday there was an active shooter at the casino. (AP Photo/Mike Roemer) GREEN BAY, Wis. – A gunman killed two people at a Wisconsin casino restaurant and seriously wounded a third before he was killed by police, authorities said.