Michael Dunn has been sentenced to life without parole for the killing of 17-year-old Jordan Davis.

The Jacksonville, Florida resident was sentenced to an additional 90 years for three attempted murder convictions and another 15 years for shooting into an occupied vehicle, reports NPR.

Dunn, 47, was convicted of first-degree murder earlier this month for killing Davis on November 23, 2012 after firing 10 shots into an SUV carrying Davis and three friends following an argument about loud music coming from the teens’ car. At the sentencing, Dunn told the Davis family he was remorseful over the events of that night. “I truly regret what happened,” he said. “If I could roll back time and do things differently I would. Still, I’m mortified I took a life.”

“Mr. Dunn, your life is effectively over,” Judge Russell Healey said after the sentencing.

Davis’ mother Lucia McBath addressed the court following the sentencing. “For years to come I will be forced to celebrate my son’s birthday without his presence,” she said, “I will be forever reminded of what might have been for my Jordan.” But she has forgiven Dunn, she added.

“I raised my son to love, accept and forgive others…therefore I too must be willing to forgive. And so I choose to forgive Mr. Dunn for taking my son’s life.”