More than a dozen underage high school students are under investigation in Fairfax County, Va., in connection with a sexting ring.
According to the search warrants, the teens started sexting when they were in middle school.
Since the investigation began last summer after a student posted a picture of his friend nude on Twitter, police have seized 12 cellphones and four laptops. Child pornography charges could be filed.
The ongoing investigation involves 19 underage teens, one adult, and more than 100 images shared through iMessage, Twitter and Snapchat.
"Between 11 and 4 o'clock in the morning, that is when 90 percent of sexting is taking place, because parents are sleeping," Fairfax County Public Schools Safety & Wellness Coordinator Clarence Jones said.
Jones couldn't talk about the current sexting investigation but acknowledged it's a rampant issue. Parents are the key to stopping it, Jones said.
"I tell all parents you need to take the charger to the cell phone and put that charger in your bedroom," he said.
This is not just a northern Virginia issue. Just outside Richmond police are investigating a sexting ring that stretches across six counties and involves more than 100 students and more than 1,000 pictures and videos.
In Prince William County, three teenagers are accused of soliciting photos of naked teenage girls to post on Instagram.
In Anne Arundel County, Md., police are investigating complaints of explicit photos of teens on Instagram and other social networking sites.