Disgusting moment: predator hunters confront 57-year-old man who allegedly tried to meet 13-year-old girl

A man was arrested after being confronted by an online child molester alert hunter prior to an alleged meeting with an underage girl.

A video shows 57-year-old Sean Brennan fighting the allegations at his workplace in Wyoming on Friday – before he was fired by his boss and taken to the local jail the same day.

It shows him coming face to face with Tommy Fellows, a member of the Colorado Ped Patrol, at Brennan's workplace in Lander.

Throughout the clip, Fellows clutches and repeatedly points to a folder that is said to contain a transcript of conversations between Brennan and the decoy “girls” – one of whom is said to be 13 years old.

During the altercation, Fellows accused Brennan of teaching one of the fictitious girls sex acts and making plans with her for the day. He also said he sent him and his co-workers sexual images.

Scroll down for the video:

“I have a little incident with some girls you were talking to on the internet,” Fellows tells Brennan in the footage after entering the Shirts and More store where he works.

Brennan had initially assumed that the regulator was a potential customer and therefore offered his help.

“Are you having sex with them?” Fellows asks, leading the two men outside together, out of earshot of the others in the house.

“No,” answers Brennan, who speaks to several police officers at the end of the filmed altercation. “I told them immediately.”

However, Fellows continues to put pressure on the man and refers to a correspondence that took place before the meeting between Brennan and his colleagues.

“So you would never send inappropriate pictures or anything like that?” he asks at one point – to which Brennan replies: “Nope.”

“So there is no child pornography or anything like that on your phone?” asks Fellows – to which the man in question again replies “Nope.”

At this point, Fellows presents the folder, says he can prove otherwise – and asks the suspect whether the police would prefer to come by for a check.

Because of these allegations, he was fired by his boss (left) and taken to the local prison the same day.

As he flips through the pages, he tells Brennan, “I have three of these books, right? Three different children.”

“Do you often ask minors for nude photos?” he asks, then mentions a specific alleged exchange in which he became angry because he did not receive a photo from one of the fictitious minors.

“They said, 'Send me a picture' and got angry,” he says in front of the man's workplace.

“Then you said, 'Listen, little girl, remember, I'm not mad, but don't ever ask me for a photo again.'”

Elsewhere, Fellows mentions that Brennan was convicted of child pornography in Arizona about 25 years ago and was subsequently required to register as a sex offender.

Brennan, however, counters that this status was no longer valid when he moved to Wyoming because local authorities told him his conviction was “crap” by their standards.

He further claims that he was only convicted after he used a public library computer to research which nude beach he wanted to visit with his then-girlfriend. He said it was images of underage girls on some of these sites that led to his indictment.

At this point, Brennan's boss appears, confused by the commotion.

The video ends with officers discussing the need for further investigation. Off-screen, officers were able to make one arrest that day. Brennan was reportedly booked into the Fremont County Detention Center.

“I’m probably going to get fired now,” Brennan tells Fellows – a prediction that would come true within minutes.

The clip shows the business owner, identified as Daniel Carey, expressing disgust and concern about the situation.

At some point he presents Brennan's application documents – which, as he had suspected, did not reveal any criminal record.

As Cowboy State Daily reported, he allegedly responded by firing Brennan that same day, revealing that Caret had told them that Brennan was often on the phone and had difficulty concentrating on his work.

“This was so far from what my company would even consider,” he told the outlet. “He was pretty, I don't know what you would call it, and was able to hide it well, to say the least. Really baffling that he did this and I had no idea.”

After a few minutes, Lander police arrived at the scene. One officer noted that Wyoming lags far behind Colorado in the severity of its sex crime laws and that at this point, it was unlikely they would be able to arrest anyone for a serious crime.

The video ends with officers discussing the need for further investigation. Off-screen, officers were able to make an arrest later that day. Brennan was booked into the Fremont County Detention Center on Friday, Cowboy State Daily reported.

Court documents were not available because state laws limit public reporting of sex crimes in advance, as is the case in this case.