Police arrested a 15-year-old after a shooting at a Seattle festival that killed 3

The suspect arrested after a shooting that killed three people and injured at least four at a diner near Seattle’s Space Needle over the weekend is 15 years old, the city’s mayor said Monday.

The boy was booked into a juvenile detention center to be investigated for firearms violations and first-degree assault and will appear in court Monday afternoon, Mayor Katie Wilson said at a press conference.

Authorities are still looking for a second suspect.

Investigators believe two suspects were shooting each other and, although one has not been arrested, Seattle Police Assistant Chief Tyrone Davis told a news conference Sunday night that there is no ongoing threat to the public.

Police do not have a description of the suspect, who has not been arrested, adding, “We are still trying to figure this out.”

Police did not immediately respond to phone and email messages early Monday morning.

Two people died at the scene and the third died at the hospital. They were described as two men, aged 19 and 44, and a 56-year-old woman.

Four injured, including a two-year-old boy, were admitted to hospital. The boy was in stable condition on Monday. The others – two men, aged 23 and 27 years old, and a woman, 39, have been released, said a hospital spokesperson.

Davis could not say Sunday night if there were any victims involved in the fight.

The vendors who fled left their stalls and were cleaning on Monday. A candlelight vigil is planned for Monday night at the center’s International Fountain.

Visitors ‘started to run’

The gunfire erupted at 6 p.m. Sunday during the waning hours of Seattle’s Bite, an annual three-day festival that draws hundreds of diners and vendors and artists.

A number of police officers were providing security at the event and some saw one of the suspects shoot, said Davis. One suspect surrendered at the scene, but the other fled.

Dozens of police and emergency responders responded and began evacuating the area surrounding the crowded Seattle Center campus.

Faith Adia Hunter said she and her friends had just gotten food from a crepe vendor when the shots rang out.

“We were just starting to eat, when we heard someone shouting, then we saw people start running,” said Hunter.

“We were right next to him when it started, then we started running,” said Hunter.

In a race to find safety, he said he and others ran to the Seattle Children’s Museum.

In this chaos, many vendors headed for the exits, abandoning their food stands. Hours later, others milled outside the police tape, wondering when they would be allowed to collect their tents, food and cooking supplies.

Salesman Roberto Ramirez said he heard what sounded like fireworks before people started shouting “shooter” and running in panic.

“Suddenly everything was empty,” he said. “People were shocked.”

After the initial panic, new guests continued to arrive unaware of what had happened and were told by police to leave, he said.

Estan Wakonabo said he and his girlfriend were standing in line waiting for a photo booth when he was pushed from behind and turned around to see a rush of people running away.

“People were hiding, pushing each other, people falling to the ground, baby carriages falling,” said Wakonabo, adding that this is when he heard gunshots.

“I heard a pop, pop, pop, and then I saw that it was a shooter,” he said.

After he escorted his girlfriend to a safe place, Wakonabo said he returned to the scene to take pictures and saw many victims on the ground.

The festival started in 1982 and draws 350,000 people, according to their website.