KNOXVILLE, Tenn. (WATE) – A Knox County jury found Eric Boyd guilty on Tuesday afternoon in the murders of Channon Christian and Chris Newsom.

Boyd received life sentences with the possibility of parole on all 18 murder convictions related to their deaths. A sentencing hearing on the other charges will be Sept. 18.

RELATED: Christian-Newsom case has spanned 12 years.

A Knox County jury that heard a week of testimony began deliberating Monday afternoon. Just before noon Tuesday, the jury had a question that Knox County Judge Bob McGee addressed and the jury returned to deliberations.

“it’s been a long time coming. He’s been getting away with murder for far too long, said Deena Christian, mother of Channon Christian, said after court adjourned.

RELATED: What the families said following the verdict.

Boyd, serving a federal a prison sentence for helping the ringleader of the crimes, Lamarcus Davidson, evade apprehension, is the fifth person to be tried for his alleged involvement in the brutal deaths of Christian and Newsom.

“This has been a rough, rough period of time for everyone,” McGee told the jury following the reading of the verdicts.

Knox County District Attorney General Charme Allen said “This day has been a long time coming for the Christian and Newsom families. it has been 12 long years as they have fought the fight to seek justice for their children.

GALLERY: Eric Boyd verdict and family reaction

I am very happy to be standing here today to say that I feel like at this point we have finally got justice for this family and I hope we have given you some small measure of comfort and closure to this long, horrific ordeal.”

“My hats off to the DA;’s who handled that case. They’ve had to live with that, too,” said Knox County Sheriff Tom Spangler. “I’m hoping, I’m hoping this is the last trial we have to have in this case.”

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Photos from Monday final arguments:

Knox County Assistant District Attorney Phil Morton gives the state’s closing argument during the trial of Eric Boyd in Knox County Criminal Court on Monday, August 12, 2019. (Brianna Paciorka / News Sentinel pool)

Eric Boyd, left, during his trial for the 2007 murders of Channon Christian and Christopher Newsom in Knox County Criminal Court on Monday, August 12, 2019. (Brianna Paciorka / News Sentinel pool)

Knox County Assistant District Attorney TaKisha Fitzgerald, left, gives the state’s rebuttal argument during the trial of Eric Boyd in Knox County Criminal Court on Monday, August 12, 2019. (Brianna Paciorka / News Sentinel pool)