The Montgomery County Police have confirmed with EW that authorities have shot down James J. Lee, the gunman who took three people hostage at Discovery Channel’s corporate headquarters today in Silver Spring, Md., and the Associated Press is reporting that he subsequently died. All hostages escaped, and are now safe.

According to Corporal Dan Friz, an explosive device might have detonated during the ordeal: “There was a minor detonation of it, but luckily no injuries to anybody,” he told EW. Back in 2008, Lee was arrested for disorderly conduct in front of the building after he led a protest against the network. His motives apparently stem from his efforts to save the planet. On a website registered to Lee, a statement criticizing the network was posted in January 2008: “These guys have been very sneaky and deceptive as to their contribution to the planetary problems. Just look at their ‘new’ show about saving the planet, Planet Green, to me, it’s just another show about more PRODUCTS to make MONEY, not about actual solutions. We can’t let them get away with doing it anymore.”

According to Friz, the building is still being cleared.

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