A teenager who shot and killed two students outside Benito Juarez High School in Pilsen has been sentenced to 46 years in prison.

Christian Acevedo, 18, was sentenced Monday after pleading guilty to two counts of murder and a single count of attempted murder before Judge Mary Margaret Brosnahan.

Brosnahan sentenced him to 40 years in prison for killing Juarez student Brandon Perez, 15, and Nathan Billegas, a 14-year-old student at Chicago Bulls College Prep on Dec. 16, 2022. Acevedo will have to serve another six years on the attempted murder count, according to court records.

Acevedo has been held in custody since he was arrested two months after the shooting.

Shortly before opening fire, surveillance cameras recorded Acevedo near the school’s campus at 1450 W. Cermak Road talking to students and then running from the campus, Cook County prosecutors said.

The shooting itself was not captured on camera, which occurred shortly after classes were dismissed for the day.

Perez and Billegas were standing in a plaza under a bridge that connects two wings of the school when shots rang out.

Prosecutors said the shooting was gang-related, telling a judge during Acevedo’s initial hearing that witnesses said they hearing someone say, “Razas over there” — referring to the La Razz street gang.

A witness took a photo of Acevedo holding a gun and standing over one of the two slain teens, allowing him to be identified to investigators.

On the day of his arrest, Acevedo was seen driving a stolen car and then running inside his house with a rifle, though the weapon was not found when police entered the home a short time later, prosecutors said.

Other guns were found in Acevedo’s room, most of them outfitted with switches that allowed them to fire multiple times with a single trigger pull, prosecutors said.

Acevedo was a former student who had been expelled earlier in the school year over behavioral, academic and attendance issues.