Wisconsin officials open investigation into police killing of Corey Ruiz

Wisconsin officials open investigation into police killing of Corey Ruiz as the state launches a homicide probe following a fatal shooting in Madison. Madison Police Chief John Patterson said on Thursday that he will cooperate with state investigators, adding that the investigation would not be concealed in any aspect. Police said Corey Ruiz, 38, was shot on Wednesday after he pulled out a knife during a struggle with four officers. State Justice Department investigators from the Criminal Investigation Division will handle the case because it involves police officers, and they will release the name of the officer who fired. None of the officers wore body cameras at the time. Ruiz was tracked after fleeing on a bike, and an officer later fired three shots after a taser attempt failed. All officers have been placed on administrative leave amid protests calling for transparency.