A 20-year-old man has been convicted of first-degree murder and sexual assault with a deadly weapon in the death of a 16-year-old Spring Creek girl two years ago.

The judge will sentence Bryce Dickey on additional charges at a later date. 

But, for now, Dickey's conviction carries a sentence of life in prison with the possibility of parole of 20 years. 

Prosecutors said earlier they weren’t seeking the death penalty.

Police originally treated Gabrielle 'Britney' Ujaky as a runaway after Dickey said he saw her get into a pickup with a man wearing a cowboy hat outside Spring Creek High School.

Her body was discovered three days later.

(The Associated Press contributed to this report.)