A skinhead has pleaded guilty to murder in the slaying of a black man whose head was struck so hard with a baseball bat that the bat split.

Kenneth M. Mieske, 23, who went by the nicknames "Ken Death" and "Batman," entered the plea Monday in the slaying of Mulugeta Seraw, 27, an Ethiopian national. Mieske said he and others killed Seraw on Nov. 13 "because of his race."Mieske also pleaded no contest to racial intimidation in the non-fatal stabbing of a black security guard at a supermarket last September.

Prosecutors plan to seek a life sentence with a mandatory minimum term of 20 years on the murder conviction, according to a plea agreement between Mieske and the Multnomah County District Attorney's office. Mieske agreed not to challenge the sentence.