Officer: Suicide led to wariness about Manning
He is accused of sending hundreds of thousands of classified Iraq and Afghanistan war logs and more than 250,000 diplomatic cables to WikiLeaks while he was working as an intelligence analyst in Baghdad in 2009 and 2010.
The materials Manning is suspected of leaking include sensitive reports on foreign governments and leaders and a 2007 video clip of a U.S. helicopter crew gunning down 11 men later found to have included a Reuters news photographer and his driver. The video garnered worldwide attention. The Pentagon concluded the troops acted appropriately during the attack, having mistaken the camera equipment for weapons.