5 teens hurt in mass shooting at playground in Philly's East Oak Lane neighborhood

Law enforcement officials are investigating after five teenagers were injured in a mass shooting that happened late Sunday night at a playground in Philadelphia's East Oak Lane neighborhood.

According to police, officers responded to the Sturgis Playground near the intersection of W. 65th Avenue and N. 2nd Street, at about 11:13 p.m. on Sunday, after a reported shooting.

Here, officials said they found four teens who had been hit by gunfire, including three boys -- two 17-year-olds and a 16-year-old -- as well as a 17-year-old girl.

Police said that all four of these individuals sustained non-life-threatening injuries.

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Later that evening, officials said an 18-year-old man -- who police have not yet identified -- arrived at a nearby hospital by private vehicle. He also suffering from a non-life-threatening gunshot wound to his thigh, police said.

Officials believe this individual's injuries were tied to this shooting.

According to law enforcement officials, these teenagers were at the playground Sunday night when at least one person -- possibly more -- came upon them and started firing.

Officers claim they recovered at least 18 shell casings from the scene, all spread out over a large area. Police also released surveillance video showing several people running through the area moments after the shooting. Several police cars arrive a few minutes later.

Police told NBC10 a gunman may have chased after these victims or several shooters were spread out throughout the playground. Neighbors also said a few hundred teens had gathered at Sturgis Playground hours before the shooting.

"They were playing a lot of loud music. Dancing. Making a lot of noise," Kevin Oliver said. "Running on different people's property around here."

Oliver and another neighbor told NBC10 they called 911 around 9:40 p.m. to report the large gathering. They said police didn't arrive however until after the shooting.

"Perhaps if the police showed up when I called about the crowd it could've been prevented," another neighbor said.

A Philadelphia police spokesperson confirmed with NBC10 that they received two calls reporting the large crowd prior to the shooting. They are currently conducting an internal investigation into the police response.

Police officials have said they have made no arrests yet and have not determined a motive for this shooting, however, an investigation into this incident is ongoing.