A north central Wisconsin sheriff's deputy resigned yesterday, the same day he was charged with having sex with a 15-year-old girl. Thirty-four year old Zachary Dorr of Wausau spent over four years as a deputy in Lincoln County, just north of the county where he lives -- and where he's charged. According to Marathon County prosecutors, Dorr met the girl at a barbeque in early April -- and they admitted having sex that night. An assistant D-A told a judge that Dorr also admitted exchanging nude photos with the youngster, and they had more sexual contact in his car a week later -- and at a May 9th wedding in Rothschild. That was where two Lincoln County deputies got married, and other officers reportedly saw Dorr kissing and giving beer to the teen. Those officers apparently saw a Facebook page which mentioned the girl's age -- and that's what triggered an investigation. Bond was set at 100-thousand dollars.