A 15-year-old boy has been charged with the fatal shooting of a 13-year-old boy in Joliet earlier this week, police reported on Wednesday.

The 15-year-old has been charged with first-degree murder and aggravated unlawful possession of a weapon in the incident, police said.

ABC7 Chicago is now streaming 24/7. Click here to watch

Police said he knew the 13-year-old, and they had an ongoing personal dispute.

The 15-year-old was taken into custody on Tuesday in Joliet for aggravated battery, mob action, and disorderly conduct related to a May 6 incident, with additional charges following upon further investigation.

He is being held at the River Valley Justice Center.

The 13-year-old boy was found shot to death Monday afternoon in Joliet, police said.

Police were called to the 300-block of Desplaines Street shortly before 4:45 p.m. with a report of a person being shot. Upon arrival, officers discovered a 13-year-old boy in a back alley, according to police.

Police said the 15-year-old shot him twice.

The Will County Coroner’s Office responded, and pronounced the boy dead on the scene.

The boy was not immediately identified.

Joliet Police Chief Bill Evans released a statement that said:

“This heartbreaking loss has deeply affected our city, and our hearts are with the family and friends of the young victim. There are no words that can ease the pain of losing a child, but I want the victim’s loved ones to know that they have the full support of the Joliet Police Department during this incredibly painful time.

“I am so thankful for every officer and detective who gave so much of themselves to this investigation. Since the moment this tragedy unfolded, many of our detectives have worked around the clock, driven by determination, compassion, and a commitment to justice. Their tireless efforts led to this arrest, and I could not be prouder of their work.

“Thank you to the Will County State’s Attorney Office for their vital assistance in charging this case. While we recognize that nothing can undo this tragedy, we hope that this arrest brings some measure of comfort to the grieving family and begins to provide a path forward toward healing. We will continue to walk that path with you.”

The video in the player above is from an earlier report.