Trevor Shannon was convicted of second-degree murder Friday in the killing of teenager Evan Wilkes and sentenced to life in prison with no possibility of parole for at least 10 years.
Shannon, then a 22-year-old drug dealer, shot the 18-year-old Wilkes in the head during an argument outside a Kelowna house party in 2007.
"(Shannon's) actions were utterly callous and without reason," B.C. Supreme Court Justice Bruce Butler said in passing sentence.
"The loss of a young life is always tragic, but more so when it so unnecessary, so meaningless," Butler said. "Such an event leaves a scar on the entire community."
Jurors deliberated almost two days after the trial concluded Wednesday before finding Shannon guilty as charged of second-degree murder. The conviction carries a minimum of 10 years and a maximum of 25 years imprisonment before parole eligibility.
Eight jurors made no recommendation regarding the amount of time Shannon should serve before being considered for parole. One juror said 10 years, one said 11 years, and one said 15 years.
In convicting Shannon of second-degree murder rather than a lesser offence such as manslaughter, jurors essentially rejected his defence the killing was more of an accident than a deliberate act, and that the gun had somehow mysteriously fired when he held it near Wilkes head.
Both the Crown and defence suggested Shannon serve the minimum 10 years before being considered for parole, which the judge said was appropriate given the circumstances.
"While this was senseless, meaningless, and irrational, it appears to have been a momentary loss of control," on Shannon's part, the judge said.
Wilkes' relatives gasped and hugged one another when the verdict was read by the jury foreman. Neither they, nor Shannon's mother, who was also in the courtroom, would comment to the media.
Given the chance by the judge to speak to the court before sentence was passed, Shannon said nothing.
He has already been in custody for five years. He was convicted of second-degree murder in 2008, but that was set aside last year when an appeals court ruled the first trial judge had erred in his instructions to the jury.
Shannon's lawyer, Brent Bagnall, said outside the courthouse that Shannon will be credited with the time he has already served in prison. So Shannon could be eligible for parole within five years.
The killing happened in April 2007 as Wilkes and other high-school students had gathered in a home on Kelowna's Vimy Avenue to celebrate their pending high-school graduation.
Shannon, who was not invited by the party host, showed up around midnight. He often carried a gun because he was a drug dealer who believed it made him an intimidating figure, court heard.