Pentagon declined to investigate hundreds of purchases of child pornography

A 2006 Immigration and Customs Enforcement investigation into the purchase of child pornography online turned up more than 250 civilian and military employees of the Defense Department -- including some with the highest available security clearance -- who used credit cards or PayPal to purchase images of children in sexual situations. But the Pentagon investigated only a handful of the cases, Defense Department records show.

The cases turned up during a 2006 ICE inquiry, called Project Flicker, which targeted overseas processing of child-porn payments. Read more.