MINNEAPOLIS — A Minneapolis police officer who shot and killed an unarmed Australian woman in July minutes after she called 911 to report a possible sexual assault behind her home was charged Tuesday with murder and manslaughter.

Officer Mohamed Noor turned himself in after a warrant was issued for his arrest. He shot Justine Ruszczyk Damond, a 40-year-old life coach, on July 15.

Damond’s death drew international attention, cost the police chief her job and forced major revisions to the department’s policy on body cameras.

Hennepin County Attorney Mike Freeman said the law makes it difficult to charge police officers unless they are “unacceptably reckless.” He said, “I agree with that.”

But he added: “Clearly Officer Noor violated the rules and deserves to be charged.”

Noor is charged with third-degree murder “for perpetrating an eminently dangerous act” and second-degree manslaughter for “culpable negligence creating unreasonable risk.”

Conviction on the first charge carries a presumptive sentence of 12 ½ years; the second, four years.