Sources: Loughner researched lethal injections, assassins

This doesn't look good for putting together an insanity defense for accused Tucson shooter Jared Loughner. Unnamed law enforcement sources tell The Washington Post that Loughner researched lethal injections, solitary confinement, and other famous assassins on his computer before he allegedly shot Rep. Gabrielle Giffords and killed six others.

"The impression investigators have is that he was trying to educate himself on assassinations and also research the consequences," one source told the Post.