((WPXI) – Authorities in Allegheny County announced an arrest of a teen in the Kennywood shooting Thursday morning. Darryl Pirl, 15, will be charged as an adult and is facing two charges of aggravated assault, firearms not to be carried without a license, possession of a firearm by a minor and recklessly endangering another person. Pirl is one of the three people who was injured in the shooting and was taken to a hospital by private means that night, according to the criminal complaint. Police said that physical evidence links Pirl to the shooting. Police said two different guns were fired during the incident and that they are looking for a second shooter, who they say is likely a juvenile. During a press conference, police said they believe the Kennywood shooting was in relation to an ongoing feud between two groups of teens in the Mon Valley, including in Duquesne and Homestead. On Sept. 24, three people were shot inside the park in the “Lost Kennywood” section by the “Musik Express” ride, including Pirl who was grazed by a bullet. Kennywood unveiled new security measures last week before opening for the first time since the shooting this past Friday.