BBC: Unidentified gunmen firing on an anti-government rally in the Yemeni capital Sanaa have killed at least 39 people and injured 200, doctors told the BBC.The gunmen fired from rooftops overlooking the central square in what the opposition called a massacre.
President Ali Abdullah Saleh declared a national state of emergency but denied his forces were behind the shooting.
US President Barack Obama condemned the violence, urging Mr Saleh to allow peaceful protests.
In a statement, he said those responsible for Friday's violence "must be held accountable".
Separately, France demanded an end to attacks "by security forces and armed pro-government groups... against people exercising their rights to free speech and demonstration", Reuters reports. (+ video) » | Friday, March 18, 2011
