SEATTLE -

King County prosecutors have filed a third aggravated murder count against a man also charged with murder in New Jersey, alleging the four killings are part of a "bloody crusade" to exact vengeance against the U.S. government for its foreign policies.

Prosecutors charged 29-year-old Ali Muhammad Brown on Wednesday with first-degree aggravated murder in the April 27 shooting of 30-year-old Leroy Henderson in Skyway, south of Seattle. Brown was earlier charged with aggravated murder in the June 1 shooting deaths of two young men in Seattle, Ahmed Said and Dwone Anderson-Young.

In early August in Newark, New Jersey, Brown pleaded not guilty to killing a college student on June 25 in that state. He's held on $5 million bail. His public defender had no comment at that appearance.

In court papers filed in Seattle, a King County sheriff's detective says Brown's statements to detectives show he committed the four murders "behind the common motive of vengeance for perceived acts of wrongdoing committed by the government of the United States."