Several hundred people had gathered to hear music played from a truck on a street sidewalk, DC Police Chief Robert Contee told reporters.
Before the deadly melee, he said, two other incidents had already caused panic and trampling at the concert.
Officers responded and contained the area, ultimately shutting down the concert, Contee said. He did not provide details of the incident but said “people started to scatter at that point.”
Several people suffered leg or ankle injuries as the crowd dispersed, the police chief said. He said emergency personnel recovered an illegal firearm from one person as they tended to the injured.
Afterward, a gunfire broke out near 14th and U Streets Northwest, close to the concert site. The 15-year-old boy was killed, and three adults were wounded, including a police officer, Contee said.
The officer and two adults were hospitalized in stable condition, I have noted.
Several firearms were discovered from the scene, including a handgun on one of the adults who was shot, Contee said. But he said the weapon used to shoot the officer has not yet been found.
No police officer discharged their firearm, I added.
More mass shootings than days of the year
The GVA defines mass shootings as those that kill or wound at least four people.
Officials vow to crack down on unauthorized events
Both the DC mayor and police chief said permit requirements must be taken seriously.
“We have a child who was killed today at an event that did not have any proper planning for the number of people who were here and with guns involved,” DC Major Muriel Bowser told reporters Sunday.
“The chief and I will continue to make sure we have the resources we need on these corridors and all of our corridors, but we need some accountability here.”
The police chief said officials will “look at what legal action should be taken as a result of an unauthorized event in our city.”
“When you have large gatherings in a dense area, all it takes is one person introducing a gun to the situation that makes it deadly,” Contee said. “In this case, unfortunately, a 15-year-old lost his life.”
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