GERING, Neb. (AP) — A Wyoming teenager charged with murder in the death of a western Nebraska jail guard has been sentenced for his role in a convenience store robbery last year.

15-year-old Dylan Cardeilhac of Torrington, Wyoming, was sentenced Thursday in Scotts Bluff District Court to eight to 15 years in prison for aiding in the robbery of a Nebraska convenience store. Cardeilhac is one of two teens accused of being involved in the crime.

Cardeilhac has been charged as an adult with first-degree murder in the strangling of 24-year-old corrections officer Amanda Baker. He has pleaded not guilty. On Thursday, a judge postponed the start of his trial after a defense attorney requested more time to research evidence in the case.