A Minneapolis police officer who shot and killed an Australian woman in July has been booked on charges of third-degree murder and second-degree manslaughter.

Officer Mohamed Noor turned himself in on Tuesday after a warrant was issued for his arrest in the death of Justine Ruszczyk Damond.

Damond was shot on July 15, when she approached the officer's car after calling 911 to report a possible sexual assault in the alley behind her house.

Hennepin County Attorney Mike Freeman filed the charges, and said Noor abused his authority to use deadly force and deserves to be charged.

In a statement, Minneapolis Police Chief Medaria Arradondo said Noor's time with the police department ended Tuesday. Arradondo said that he delayed any employment decisions at the request of prosecutors so it wouldn't interfere with the criminal investigation.

Damond's family said the charges are "one step toward justice." In their statement, the family said they hope a strong case will be presented and Noor will be convicted.

Noor is being held on $500,000 bail.