Activists and residents gather to mourn the teenager killed by police in Dayton on Saturday

Officers said they provided emergency medical attention to the man who was shot. He was taken to a local hospital where he was pronounced dead.

People close to the family described the perpetrator as a 15-year-old boy.

“This is so, so devastating,” said Sabrina Jordan, an activist with Ohio Citizen Action whose 22-year-old son, Jamarco McShann, was shot and killed by police in Moraine in 2017. “Another baby lost at the hands of the police.”

Dayton police posted a social media update Sunday afternoon identifying the gun used by the suspect as a Glock 17 with a loaded 30-round magazine. The post included a photo of the gun.

As of 4 p.m. Sunday, police had not identified the person shot. Questions were emailed to Dayton Police Chief Kamran Afzal on Sunday morning.

The Montgomery County Sheriff’s Office is conducting the investigation into the shooting, Dayton police said. But Jordan said the Ohio Bureau of Criminal Investigation will have to take over that task. And she said she wants to see all police body camera footage of the encounter.

Participants in the rally called the boy “Brian.”

“I just can’t believe it,” said a woman who was introduced as Brian’s mother, speaking quietly into a microphone. “I just want to be there for my son. That’s all.”

Later Sunday, a crowd gathered near the spot where the boy was shot and released balloons in his memory.

Dion Green, whose father was among nine people killed in the Oregon District mass shooting, told Negley’s audience Sunday afternoon that such moments are never easy.

On August 4, 2019, Green was in the Oregon District enjoying an evening with his father when a gunman opened fire. Green’s father, Derrick Fudge of Springfield, was among nine people killed before Dayton police killed the gunman.

“There were children here, and after the shooting, no one from a mobile crisis team came to help these families,” Green said Sunday. “This is a long-term thing. I’m still going through this today.”

“We failed our children,” said Montgomery County Commission President Deborah Lieberman, who attended the rally. “All I can say is it breaks my heart. It breaks my heart for our community. And we’re going to find out what happened. And how.”

Lieberman asked those attending the rally to count to 15 – “because that is the number of shootings that have taken place in Dayton in the past week,” she said.

Before Saturday, 13 people, including an 11-year-old boy, were shot in three separate shootings in Dayton on June 24; two people died in the shootings.

Daj’za Demmings, a community activist, said: “We all need to promote transparency. We have been talking about transparency for so long.”

“We need the video to see what’s going on,” she added, referring to the footage from the officers’ body cameras. “And even if we look at the video, there’s no reason to kill a 15-year-old child.”