Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.

WINGATE, N.C. — A man here who spent his time trying to improve his neighborhood was shot to death on Monday while streaming on Facebook Live, authorities said.

Prentis Robinson, 55, was gunned down roughly one block from police headquarters where he had just stopped to report a stolen cell phone, according to Wingate Police Chief Donnie Gay.

The suspect, 65-year-old Douglas Cleveland Colson, surrendered Tuesday to the Union County Sheriff's Office, according to Gay. Colson, a lifelong Wingate resident, has been arrested before.

In the footage, which Facebook has since removed but was viewed by NBC News, Robinson can be seen walking down a street in Wingate, south of Charlotte, with a cell phone attached to a selfie stick.

“You on Live,” Robinson says repeatedly to someone off-camera who appears to be moving toward him.

The person, whose face isn’t visible, then appears to fire four gunshots. Robinson tumbles to the ground.

Let our news meet your inbox. The news and stories that matters, delivered weekday mornings. This site is protected by recaptcha

In a statement, Facebook said it removed the post because the company couldn't have known if Robinson wanted "this horrific act to be live streamed on social media."

Related: Cleveland shooting highlights Facebook's responsibility in policing depraved videos

Gay said the suspect was wearing blue jeans, brown Timberland-style boots and a black and blue windbreaker. Citing local police, Wingate University — which briefly put its campus on lock down after the nearby shooting — added in a statement that the suspect was armed with a long gun.

Douglas Cleveland Colson is wanted for first degree murder. Wingate Police Department

It wasn’t clear why Robinson was targeted, Gay said, though his killer didn’t seem to care about appearing on camera — or shooting someone so close to the police department.

"Only being a block or so away from the police department — if that’s not brazen I don’t know what is,” Gay said, adding: "It's heart breaking. I can’t believe it."

Gay said that Robinson was one of nine kids. Aside from a brief move to Atlanta, Robinson had lived in North Carolina his entire life and had become well known for Facebook videos in which he took “it upon himself to clean up this area.”

Related: Murdered Ohio grandfather's family sues Facebook

A friend of Robinson’s, Chester Sanders, said the videos — which included Robinson highlighting illicit neighborhood activities, like drug dealing — likely made people upset.

“If people don't like it and they get angry, at some point in time it will start and something will happen,” he said. “I don't know if this was the reason for ... this tragedy to happen but it happened.”

In a video posted on his way to the police station on Monday morning, Robinson can be seen walking through the neighborhood with his selfie stick. He waves to passing cars, contemplates singing birds, complains about his stolen cell phone and worries about the area’s elderly residents.

"They're afraid of some of the activities going on,” he said, adding: "I’m trying to keep the neighborhood quiet like this — peaceful."

Morgan Radford reported from Wingate, North Carolina, Tim Stelloh reported from San Francisco, California