September 18, 2013
One of the first teams of heavily armed police to respond to Monday's shooting in Washington DC was ordered to stand down by superiors, the BBC can reveal.
A tactical response team of the Capitol Police, a force that guards the US Capitol complex, was told to leave the scene by a supervisor instead of aiding municipal officers.
The Capitol Police department has launched a review into the matter.
Aaron Alexis, 34, killed 12 people at the Washington Navy Yard.
"I don't think it's a far stretch to say that some lives may have been saved if we were allowed to intervene," a Capitol Police source familiar with the incident told the BBC.