DELRAY BEACH, Fla. — A Miami-Dade Sheriff’s Office deputy got caught in a vigilante’s sting that showed him on video admitting that he had exchanged sexual messages and met with someone who had identified themselves as a teenage girl.

561 Predator Catchers, or 561 PC, a Delray Beach-based vigilante group associated with MMA fighter Dustin “Scrappy” Lampros, shared the video showing MDSO Lt. Christopher J. Diaz admitting he had sent a sexual selfie to a user who had identified as a 15-year-old girl.

Video shows Miami-Dade deputy admitting he met dating app user who identified as 15-year-old girl

Miami-Dade Sheriff Rosie Cordero-Stutz announced on Saturday that she had initiated termination procedures after reviewing Diaz’s arrest on a battery charge on Friday night in Palm Beach County.

“I am outraged by the arrest of one of my deputies on criminal charges involving alleged contact with an individual who posed as a minor,” Cordero-Stutz said in a statement. “This behavior is unacceptable and represents a serious betrayal of the oath we swear and the trust our community places in us to protect our children.”

According to the police arrest report, Diaz, who was born in Hialeah, showed up on the date armed with a gun and surrendered it during his arrest.

Miami-Dade Lt. Chris Diaz was arrested on Friday in Palm Beach County. Palm Beach County inmate records show Miami-Dade Sheriff's Office Lt. Chris Diaz was arrested on Friday for battery - touch or strike.

The video shows Lampros and Vitaly Zdorovetskiy, a YouTuber and prankster who streams on Kick, ambushing Diaz outside the IPIC movie theater in Delray Beach.

“She said she was 15, yes ... I am 50 ... I actually thought she was 18 or 19 ... I knew this was coming. I get nothing from running. You guys have my phone number. You guys have my picture ... That’s my penis,” Diaz told Lampros when confronted with an alleged record of the messages, according to the 561 PC video.

The video also shows Diaz saying that he had made the initial connection while using dating apps Down and HUD. Records show corrections booked Diaz at 2:55 a.m. on Valentine’s Day at Palm Beach County’s main detention center in West Palm Beach.

“We don’t work with them, we don’t work alongside them, we just call 911,” Lampros said about Delray Beach police officers’ involvement, according to the viral video on Kick that had over 43,000 views on Saturday afternoon.

According to the police arrest report, the 24-year-old woman who posed as a 15-year-old girl during the movie theater date described how Diaz touched her breast despite her saying, “No, no, no.”

Diaz posted bond Saturday night and left jail.

Read the arrest report