Kennewick police are still looking for the man who stabbed another man to death on Christmas Eve.
Gerardo Villamar Jr., 23, died from stab wounds to his back at Trios Health. Two of his cousins also were injured in the attack.
The knives used in the stabbing were recovered from an east Kennewick backyard where the suspect was seen jumping a fence. Authorities have sent them to a state crime lab to be analyzed for DNA and fingerprints.
The suspect is described as between 5-foot-10 and 5-foot-11, with short black hair and an athletic build. He was wearing a plaid sweatshirt, white shoes and possibly a baseball cap.
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Police have said the stabbing may have been gang-related. One of the three relatives with Villamar at the time of the attack is a documented gang member, though Villamar was not.
The cousins -- Erick J. Nieto, 23, Rafael Nieto, 24, and Jose A. Vazquez-Villanueva, 39 -- were arrested and booked into the Benton County Jail under suspicion of rioting.
Anyone with information on the stabbings or suspect should contact Crime Stoppers at 586-8477, 800-222-8477 or www.tricitiescrimestoppers.org.