We’re receiving word that shots have been fired inside the Rayburn House Office Building. The whole U.S. Capitol complex is shut down, according to reports on CNN. We’ll have more as it breaks.

Update: So it seems to be the sound of shots that have been reported, and in the Rayburn Building’s garage. Staff are ordered to shelter in place.

Update II: So it seems that one staff person heard what they thought were gunshots. Police are still trying to establish whether shots were actually fired or not. We’ll be the first to throw this out there — might this be another instance of us security-conscious Washingtonians taking a possible minor breach in security and blowing it out of proportion?