A gunman, who opened fire on a July 4 parade in Highland Park, Illinois, killing at least six and leaving 24 injured, used a “legally obtained” firearm, Mayor Nancy Rotering said Tuesday on NBC’s “Today.”

 The shooter used a high-powered rifle and reportedly shot from a sniper position on a roof. Police named the suspect as Robert “Bobby” E. Crimo III.

“I don’t know where the gun came from, but I do know it was legally obtained,” Rotering told “Today.” “I think, at some point, this nation needs to have a conversation about these weekly events involving the murder of dozens of people with legally obtained guns. If that’s what our laws stand for, we need to reexamine the laws.”

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The city passed a law nearly a decade ago that banned assault weapons.

“The City Council has determined that assault weapons are not traditionally used for self-defense in the City of Highland Park, and that such weapons pose an undue threat to public safety to residents, property owners, and visitors within the City of Highland Park,” the ordinance said.

Gun rights advocates challenged the law to the Supreme Court. However, the high court opted not to hear the case.

Rotering said the suspect was not “previously known to police until yesterday.” Rotering also revealed that she knew the suspect as a child.

“I know him as someone who is a Cub Scout when I was a Cub Scout leader,” she said. “It’s one of those things where you step back and say, ‘What happened?’”

Born on September 20, 2000, Crimo is from Chicago. He is better known by his stage name “Awake the Rapper.” The artist, who’s on Spotify, has tracks like “By the Pond”, “KIA”, and “deja vu, a poem for you.”

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Crimo’s social media accounts on Facebook and Instagram seem to have been taken down after the police named him as a suspect. 

The suspect, who was driving a 2010 silver Honda Fit, was recognized by a North Chicago police who initiated a traffic check.