A gunman, apparently with cylinders attached to his back (these cylinders seem to be explosives) has taken at least 2 hostages, according to CNBC, in the Discovery Channel Headquarters. One shot was confirmed to be fired, and the building has been evacuated. The story is being updated on many news networks.
Follow the story on: http://news.blogs.cnn.com/2010/09/01/police-reports-of-armed-man-at-discovery-channel-headquarters/?hpt=T2
The gunman has made the following demands: