Police shot and killed woman alleged to have kidnapped and assaulted child

Police in Omaha shot and killed a woman they say kidnapped a young boy inside a Walmart. The suspect then took the boy outside and slashed him with a knife, police say. 

The suspect approached a woman shopping at the Walmart, brandishing a large knife, which she'd shoplifted from inside the store. Deputy Chief Scott Gray said the suspect told the woman to walk in front of the shopping cart, which she followed with the child at knifepoint, CBS News reported. 

Police responded to a 911 call, and they confronted the woman outside the store. The suspect then began "swiping the knife at the child, cutting him across the face," Gray said. 

An officer fired at the suspect, who died at the scene.