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ROCHESTER — A former Olmsted County sheriff's deputy attempted to barter sexual favors from someone he thought was a teenage girl over a social media app while he was at work, according to a search warrant released on Friday.

Mathew Richard Adamson, 44, faces three felonies related to soliciting a child, three felonies related to possessing child sexual abuse material, four gross misdemeanors related to interfering with someone's privacy, and one gross misdemeanor related to the misconduct of a public official. His next court appearance is scheduled for Jan. 24.

Adamson was as he tried to meet up with someone he thought was a teenage girl.

According to an RPD search warrant, Adamson had a conversation with an undercover officer posing as a 13-year-old girl over two days through the social media app Whisper, where, the court document says, he offered to purchase alcohol in exchange for sexual favors.

The chat logs released in the search show Adamson giving detailed instructions regarding sexual acts.

"I don't need money, I usually exchange alcohol or cigs for other services. I am willing to negotiate ... ," Adamson wrote to the undercover officer. He went on to describe multiple sexual acts. "I don't pressure people, only if they want to do this. I also don't change the deal once we agree."

Adamson mentions that he is working while the conversation takes place, according to the search warrant.

Police seized a Google Pixel 8 smartphone, an Android Smartwatch, a Dell laptop, two USB drives, a work-issued iPhone 12, a box of tissues, and two packs of generic Viagra, according to the search warrant inventory list. Adamson's work locker, in addition to his vehicle, was searched by police.

In addition to his solicitation charges, of women being detained at the Olmsted County Adult Detention Center, as well as videos and images that include underage girls in different bathrooms that appeared to be taken without their consent.

following his initial charges in late October. No longer a deputy with the Sheriff's Office, he was employed there from 2005 to 2023.

"The alleged conduct described in these criminal complaints is inconsistent with the values of the Sheriff’s Office, the work of the individual Sheriff’s Office employees who have dedicated their lives to public service, and the communities we have sworn to serve," Olmsted County Sheriff Kevin Torgerson said in a statement on Thursday afternoon, Dec. 7.

"The Olmsted County Sheriff's Office takes great pride in the trust the public places in us to respect and support all people in our communities. We will continue to serve and protect our communities to the best of our judgment and abilities."

and appointed Assistant Mower County attorneys to lead Adamson's prosecution.

RPD was initially tipped off to Adamson's behavior by local YouTube vigilante Chase Johnston. Johnston claimed Adamson attempted to solicit a girl but the information was never forwarded to the Olmsted County Attorney's Office, at the direction of Ostrem.

Adamson also worked as a police officer in St. Charles from 2003 to 2007 and was a Rochester Public ÍáÍáÂþ»­s substitute teacher from 2003 to 2005.

He is one of two former law enforcement officials currently charged in Olmsted County with a sex crime against a child.

Former Rochester police officer Timothy Robert Morgenstern, 23, of Rochester, is all felonies. The charges also mention his position of authority over the victim.

Morgenstern is accused of grooming a juvenile female and raping her after meeting her as a coach at John Marshall High ÍáÍáÂþ»­ in 2022, according to the criminal complaint.