Back on August 12th, this officer was called to an apartment complex to investigate a 15-year-old teen girl said to have a knife. The girl's 16-year-old boyfriend called police from the apartment bathroom saying that she cut him. Upon arriving, Officer Doug Conrad saw the girl chasing the boy with the knife. 

After she refused to stop the chase, he fired shots.

Muskegon County Prosecutor D.J. Hilson announced today.

"It's my opinion in this particular incident that the officer involved did everything in accordance with the law," Hilson said. "It was essentially self defense of others."
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Source: Liveleak.com