Olivares-Coster sentenced

Sebastian Olivares-Coster tearfully addresses his victims and their families during his sentencing hearing. (AP photo)

HELENA — The Montana Supreme Court ruled Tuesday that a judge who sentenced a Helena teen to three life sentences for killing one boy and trying to kill two others was wrong to impose restrictions on parole eligibility.

The decision said District Judge Dorothy McCarter erred in imposing a 60-year restriction for parole on Sebastian Olivares-Coster's sentences. The teen's attorneys had appealed the sentence, saying the judge didn't have the authority to impose the restrictions because he was 17 when he shot and killed 16-year-old Cory Andrewski on June 3, 2009.

The Independent Record reports the justices affirmed all other aspects of the sentencing.

Olivares-Coster also pleaded guilty in November 2009 to shooting and seriously injuring two other boys, ages 15 and 17. The two concurrent life sentences for the attempted deliberate homicide counts were to run consecutive to the life sentence on the deliberate homicide charge.

Be the first to know

* I understand and agree that registration on or use of this site constitutes agreement to its user agreement and privacy policy.

Court records say Olivares-Coster inserted himself into an argument between two boys over the affections of a 15-year-old girl. The two boys who were injured told detectives that Olivares-Coster met with them and Andrewski and told them they were to follow him up a hill where they would meet another boy for a fight.

When they arrived, Olivares-Coster shot Andrewski in the head before shooting the other two several times.

Olivares-Coster readily admitted to Andrewski's murder and the attempted murders of the other teens, but he has never explained why he did it.