Libya protests: Reports of intense Benghazi violence
Libyan troops have opened fire with machine-guns and large-calibre weapons on anti-government protesters in the second city Benghazi, witnesses say.
An unknown number of people, including children, are said to have been killed.
Witnesses described scenes of chaos as snipers shot from the roofs of buildings and demonstrators fought back against troops on the ground.
The BBC's Bridget Kendall reports.