A 19-year-old man charged with killing a teenage girl a last year because he “felt an urge to hurt someone” was sentenced this afternoon to 18 years in prison.
Kolby Clark had pleaded guilty in March to second-degree murder with a deadly weapon for killing Jasmyn Tully, 17, of SeaTac, on March 17, 2012. The sentence range, which included a deadly weapon enhancement, was 12 to 20 years in prison, according to the King County Prosecuting Attorney’s Office.
Tukwila police were called to an apartment in the 11600 block of 42nd Avenue South in Tukwila just after 2:30 a.m. for a report of a woman bleeding and unconscious. Officers and medics found Tully with a stab wound to the left side of her neck and what appeared to be “defensive” wounds to her right hand, according to a police report.
She died after being taken to Seattle’s Harborview Medical Center.
Residents of the apartment told police that Tully and Clark had been spending the night at the home. Clark was 17 at the time.
Investigators searched for Clark and found him a few blocks away was walking in the street in his barefeet. He also had a cut on his left wrist, according to the police report.
Investigators said Clark told them he had been attacked by a man on the street who was dressed all in black and wearing combat boots. The same man, he said, chased him out of the apartment, according to the police report.
K-9 officers searched for the alleged assailant, but found no one matching that description. Investigators say Clark changed his story to say that he attacked Tully and cut himself, the police report said.
Clark told police that after Tully fell asleep he had “felt an urge to hurt someone,” the police report said.
Police said the teen showed them where he discarded the knife.
Clark’s family told The Seattle Times after his arrest that he had been smoking synthetic marijuana that night.