Police found 4 bombs including two made with propane. They're also gathering evidence from when gunman James Lee stormed into the building and took three of 1,900 workers hostage.
During the ordeal.... Lee ended up on the phone with an NBC producer. Lee talked to the producer for about 10 minutes.
But the standoff continued for another four hours until Lee was shot and killed by police.
The gunman was reportedly angry over the Discovery Channel's lack of programming on global warming.
Lee said he experienced an "awakening" when he watched former Vice President Al Gore's documentary "An Inconvenient Truth."
Too bad for Big Media....that it wasn't an abortion clinic and a guy who had just watched, say, The Passion of the Christ!
For another eco-terrorist example, see - Greenism As Religion.