On a night when hundreds of volunteers cruised streets seeking to turn in arson suspects as part of Detroit's fire-prevention effort called Angel's Night, one similar do-gooder was cooling his heels Monday in the pink-and-green lockup of the Grosse Pointe Farms Police Department, officials said.

The St. Clair Shores man behind bars allegedly pointed a gun at a woman he suspected of arson at a recent fire in Detroit -- and posted a video about it to online site Periscope. But he was arrested Sunday night and is expected to be arraigned Tuesday, according to police.

The Free Press is not naming him since he has not be charged with a crime.

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The man gained widespread attention after he posted a video of his apparent vigilante-style actions. On the video, he is heard talking about how he chased and caught the arson suspect on Oct. 14 on Whittier on Detroit's east side before authorities arrived, holding her at gunpoint, and that he hoped to receive an award for his effort, the Free Press reported.

But the man was arrested Sunday night on suspicion of a weapons violation, said Detroit Deputy Fire Commissioner Dave Fornell.

"It's clear in every firearms training course there is -- Do not pull a gun unless you've going to use it," said Fornell.

"If I was out and saw something go down, I'd get on the phone, I'd watch and I'd stay in the car because you don't know what that person's going to do. I certainly wouldn't get out and pull a gun."

Fornell said Grosse Pointe Farms police arrested him on suspicion of failing to have a concealed weapons permit.

On the video, the man says: "I literally detained her twice. If I had handcuffs, I would've done something," he is heard telling a friend in the car with him. He describes himself as "a fire and major incident videographer and drone pilot in Detroit." The video had more than 34,000 followers last week but by Monday evening had been taken down.

A woman who answered the phone at the man's home Monday night refused to speak.

Contact Bill Laitner: blaitner@freepress.com