There are no reports of any injuries or anything close to injuries. But a smoke bomb of some sort was apparently thrown on to the White House grounds this evening, apparently during an Occupy protest outside the White House.
The Secret Service is currently investigating. Jennifer Bendery, a reporter for Huffpo, tweets that White House reporters are being forced to wait at the White House while the Secret Service investigates.
Late Update: From a White House press pool report of about 20 minutes ago …
Upon returning to the WH, members of the press corps are being prevented from leaving the grounds. USSS investigating an object that was allegedly thrown over the fence.
Penn Ave is closed as well.
Later Update: From another White House press pool report from 10:32 PM …
After holding in the briefing room for 45 minutes, a WH official escorted the press corps out of the WH grounds through the EEOB and out to an exit on 17th Street.
