Oklahoma 17-year-old Chancey Luna will likely spend the rest of his life in prison.
A jury took just one hour on Friday to find the teenager guilty of the first-degree murder of Australian baseball player Chris Lane and agreed he should be sentenced to life in prison without the possibility of parole.
Lane's devastated parents Peter and Donna and sisters Erin, Andrea and Jennifer had court staff in the Stephens County Courthouse in tears after they took turns reading gut-wrenching victim impact statements from the witness box after the verdict.
Luna showed no emotion at the jury's verdict or the Lane family's pain.
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However, as he left the court and was led to the adjacent jail Luna told reporters he was "sorry".
"This naughty boy is never going to do this to any other family," Donna Lane said after the verdict.
As well as deciding if Luna was guilty of first-degree murder, the jury of seven men and five woman were asked to decide if the teenager should ever have the chance at parole.
He could have been eligible for parole in 38 years.
They swiftly decided he should live the rest of his life behind bars.
District Court Judge Ken Graham is expected to confirm the sentence in his Duncan courtroom on June 16.
Luna was 16-years-old and riding in the back seat of a Ford Focus with two teenage friends on August 16, 2013 when he pointed a .22 calibre revolver out the window and fired a bullet into 22-year-old Lane's back.
Lane was innocently jogging along the side of the road.
He gasped for breath and died minutes later.
Lane had a scholarship to play baseball at an Oklahoma university.
