BEIRUT, Oct 21 (Reuters) - Heavy gunfire erupted in central Beirut on Sunday after protesters tried to storm the offices of Prime Minister Najib Mikati, demanding that he quit over the assasination of a top intelligence official.
An official said security forces had fired in the air.
Witnesses said at least two protesters had fainted, apparently as a result of tear gas fired by security forces after protesters breached an outer barrier around the prime minister's offices.
Hundreds of protesters, waving flags from the anti-Syrian opposition Future Movement - a mainly Sunni Muslim party - and Christian Lebanese Forces as well as black Islamist flags, marched on Mikati's offices after the funeral of Wissam al-Hassan.
They accused Syria of being behind Hassan's killing and called for Mikati to resign.