General Holder says investigation into Ferguson, Mo. police is underway

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WASHINGTON, D.C. (PIX11/AP) -- Attorney General Holder said in a press conference Wednesday that the investigation into Ferguson, Mo. police will be conducted rigorously and in a timely manner.

He announced the investigation following the shooting last month of an unarmed black 18-year-old by a white police officer in the St. Louis suburb.

It's a separate inquiry from an ongoing federal civil rights investigation into the circumstances of the Aug. 9 shooting of Michael Brown by Officer Darren Wilson. A local grand jury is also investigating.

The thorough investigation will assess the police department's use of force, including deadly force. It will also analyze stops, searches, arrests and the treatment of individuals detailed in Ferguson's city jail, Holder said in the press conference.

Ferguson's Mayor, City Manager and Police Chief have reportedly welcomed the investigation and pledged complete cooperation. The investigation will also engage with the St. Louis County Police Department in a "collaborative reform effort," which will allow for a more comprehensive assessment of law enforcement officials.

Moving forward, Holder hopes to rebuild the relationship and trust between law enforcement and the community. But the Attorney General also emphasized that if, at any point, there is reason to include additional police forces, they will do so.