Jonathon Dewayne Peterson, 32, was arrested after police say he 3sent sexually explicit photos to two 13-year-old girls. On Jan. 21, the parents of one of the girls called the Pima County Sheriff's Department after discovering have sent nude photos to their daughter. The girl's cellphone and iPad were seized, and a forensic investigation confirmed photos had been sent. Earlier this month, the National Center for Missing and Exploited Children received a tip about another 13-year-old girl who may have been victimized by Peterson, said Tucson police say. A separate investigation was launched, and Peterson was arrested again Wednesday with the help of the U.S. Marshals Service.