A Border Patrol agent charged with manslaughter in the 2012 shooting of a Mexican teenager—16-year-old Jose Antonio Elena Rodriguez—has been acquitted by a jury in Arizona.

Jurors in Tucson found Agent Lonnie Swartz not guilty of involuntary manslaughter but didn't come to a decision on voluntary manslaughter, according to the Houston Chronicle. The verdict comes months after Swartz was acquitted of second-degree murder by another jury that had deadlocked on manslaughter charges, allowing prosecutors to pursue the case again.

Swartz had said throughout the proceedings that Rodriguez was one of several young men who threw rocks at him.