Three youths in Florida are charged with electronic transmission of child pornography over an Instagram account that shared sexually explicit photos of minors. Two boys, 12 and 15, and a girl, 13, are accused of creating the account, which encouraged its 500 followers to "expose" their peers. Victims' names and personal information were also posted alongside hurtful comments, police tell the Orlando Sentinel. The youths were arrested yesterday after a 10-week investigation; police haven't specified how many photos were shared but say there were "multiple" victims. "The Pembroke Pines Police Department urges the community to pay close attention to their children's online activity," an officer says. (More child sexual abuse material stories.)