A shooting broke out in Chicago's South Side neighborhood shortly after 12:30 a.m. Sunday morning. A total of 13 victims, ranging in age from 16 to 48, suffered “different and various gunshot wounds to their bodies," police told the Associated Press.
According to Chief of Patrol Fred Waller, the shooting began at the party, which was a memorial for a person who was murdered back in April.
"This incident stemmed from a dispute within that party," Waller said. "This party was given in the memory of a subject that was slain in April. We're still developing details as far as that goes."
There are three locations where the shooting took place. It began inside the residence, outside once partygoers began fleeing the scene and again in a nearby area.
Police also believe that one person fired back at the attackers once they fled the home.
"Then a vehicle was driving down the street. One of the people also who left the residence fired upon this vehicle," Waller said. "So we had three different scenes, all within a close proximity."
Police Operation Devices (PODs) allowed officers to establish that there were two gunmen.
"We can't tell from inside who was firing. But from outside, definitely it was two different shooters," Waller said. "It looks like they were just shooting randomly at people as they exited the party."
Four victims are currently hospitalized, including the 16-year-old, CNN reported.
Police currently have two persons of interest in custody, although no suspects have been identified. They know at least one of the persons of interest was somehow involved in the dispute because the person sustained a gunshot wound. The other person was found with a firearm and arrested.
Police are considering this an isolated incident and not gang-related.
Terrence Daniely, a nearby neighbor, said he heard gunshots when the incident took place.
"I was awoken by the sound of, seemed like 4, 5, or 6 gunshots and it seemed pretty loud, so it seemed kind of close. I didn't see any commotion when I looked out the window but then shortly after I heard the sounds of people screaming and running from a party on the street," Daniely recounted. "It was just so many people out, so many cars on the street, and the police response was amazing, it seemed like there were 100 police officers running to the scene."
16th Ward Alderman Stephanie Coleman said the incident does not reflect her neighborhood.
"Very sad and very disappointed that our children, this is their welcoming not only into the Christmas holiday, but to their Christmas break," Coleman told ABC 7. "I saw disappointment, I saw frustration, I saw fear, I saw lots of concerned neighbors getting to the bottom of it. I saw children at 12:30 in the morning, could you only imagine children out because there was that much activity going on."
This story has been updated with additional information.