Collin Campbell, a Machinist's Mate 2nd Class in the Navy, is under house arrest after a fellow Navy guy borrowed his iPhone and discovered a bunch of kiddy porn in a folder labeled (drumroll) "porn."

The NCIS investigated (still kind of surprised they actually exist outside of the TV show) and said Campbell "admitted to downloading between 10-20 images of child pornography and alleged he obtained all those images from the website www.4chan.org," including images of children as young as "four or five" having sex with adults. If Campbell really got the images on 4chan, then his is the second 4chan-related arrest this month. If found guilty, Campbell faces up to 20 years in prison for the iPhone pictures as well as a cache of 115 more instances of child pornography discovered on his laptop computer. [TSG]