A man who was employed as a camp counselor at Camp Gator in Lake St. Louis and as a lead gym attendant at the St. Peters Rec Plex in 2014 and 2015 was charged Friday with sexual misconduct including a child under 15, St. Charles County Police said.

Robert Alfred Lall, 26, was charged Friday after a Department of Homeland Security agent said Lall sent photos and video of his genitals to a Canadian law enforcement officer, who was masquerading as a 13-year-old girl. The messages were sent through an app called Kik between May and August of 2015.

According to the probable cause statement, the officer — who was going by the name "Molly" — told Lall twice that she was 13. Lall responded by saying "I just like younger girls I guess Lol I can't explain it," and said he started talking to her because she's young.

He then sent the agent a photo of a 13-year-old girl he said he had sex with.

The Department of Homeland Security was made aware of the discussions, and on May 6, the agent from the Department of Homeland security spoke with Lall at his home on the 2000 block of Plum Leaf Circle in St. Peters.

Lall admitted to using Kik to send girls nude images of himself, and that one of the images that he took was taken in the bathroom of his home. He also told the agent the picture of the other girl was one that he downloaded from the internet and did not even know who she was.

Lall is in custody. His bond was set at $50,000.

Lake St. Louis city officials say Lall recently resigned before camp started this summer. He also worked at the St. Peters Rec Plex where city officials say he did not work directly with any children. A spokesperson says he was fired when the city learned of the investigation.

Photos: 2016 STL area mug shots