JOHNSTOWN, Pa.—A man being sought in the stabbing death of his girlfriend at a western Pennsylvania car wash has turned himself in to face charges, police said.

Demetrius Gibson of Johnstown was accompanied by family members when he surrendered just before midnight on Saturday, according to the (Johnstown) Tribune-Democrat (http://bit.ly/16VZnJA). Police did not know the whereabouts of the suspect before he turned himself in.

Gibson, 21, was arraigned and taken to Cambria County prison pending a preliminary hearing, said Sgt. Patrick Goggin.

Police had sought Gibson since his live-in girlfriend, Elizabeth Ann Miller, 21, was stabbed at a car wash on Aug. 6. Miller was taken to the hospital after the stabbing but died in the operating room. A knife, which police believe to be the murder weapon, was recovered from the scene.

Gibson was being held at the Cambria County Prison without bail. Court records indicate that he faces one count of homicide and two counts of aggravated assault as well as a charge of recklessly endangering another person.

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Information from: The Tribune-Democrat, http://www.tribune-democrat.com