PHILADELPHIA (CBS) — A teenager has been convicted of murder in the shooting deaths of two 16-year-old boys. A jury found Brandon Olivieri guilty on all counts in the October 2017 murders of Salvatore DiNubile and Caleer Miller.

Olivieri, now 18, was 16 at the time of the shootings. He was charged as an adult.

The shooting happened at 12th and Ritner Streets in South Philadelphia on Oct. 28, 2017.

Prosecutors say Salvatore, who was a student at Saint Joseph’s Prep, got into a fight with Olivieri before the shooting. According to prosecutors, Olivieri went to seek revenge when he gunned down Salvatore.

As for Caleer, a student at Mastery Charter School, he was not Olivieri’s intended target.

Sal DiNubile + Caleer Miller

Credit: CBS3

Olivieri maintained his innocence during the double-murder trial.

Prosecutors say they had an overwhelming amount of evidence despite never finding the gun.

“We believe justice has been served but we really want to remind everybody this is about the memories of the victims,” said assistant district attorney Matthew Krouse.

Families from both victims, as well as the now-convicted murderer, packed the courtroom before the verdict was read.

For extra protection, sheriff’s deputies lined the courtroom walls. When the jury foreman said the word “guilty,” the victims’ families shouted “yes,” as others started crying.

“It’s not joy, it’s pain. We relive everyday this tragedy over and over,” said Salvatore’s father, Sal DiNubile.

DiNubile hopes his son’s killer spends his life in jail.

“I never want him to see the light of day, ever,” he said.

Olivieri’s parents say their son is innocent.

Olivieri’s attorney, Robert Mozenter, said he wasn’t surprised by the verdict. He also said forensic evidence was lacking.

“We did our best. It’s a very sad, tragic case,” said Mozenter. “Two young boys died and a third is going to jail a long, long time.”

Olivieri is set to get sentenced at a later date. He faces a minimum of 35 years in prison.

CBS3’s Matt Petrillo contributed to this report.