A DeKalb County fireman was arrested Friday afternoon, after he was caught allegedly masturbating in his car on Interstate 20.

According to Newton County Sheriff’s Office Public Information Officer Cortney Morrison, Ronald Dunn, 36, of Eatonton, was traveling eastbound when a female tractor trailer driver pulled next to him on the interstate and noticed what he was doing. She took a picture of him performing the act with her cell phone and called 911.

NCSO deputies made contact with Dunn and he was arrested and transported to the Newton County Detention Center where he was charged with public indecency, a misdemeanor.