A judge in Chicago has handed down a 26-year sentence for a teen who pleaded guilty to participating in the beating death of a high school honor student that was caught on video.

Seventeen-year-old Eric Carson pleaded guilty to first-degree murder in the 2009 death of 16-year-old Derrion Albert.

The Chicago Tribune reports that Carson wept in court Friday as he said goodbye to his family. The sentence was part of an agreement with prosecutors.

Carson was 16 at the time of the attack. He was seen on the video hitting Albert on the back of the head with a large board. Albert was then beaten and stomped by several other teens.

Two other defendants have been convicted in Albert’s death, and two others await trial.