At least 15 people were killed on Saturday when violence erupted in the capital Sana'a as anti-government protesters marched through the city demanding the ouster of President Ali Abdullah Saleh, dpa reported.
Medical sources told dpa that 11 people were killed when government forces opened fire and used tear gas against protesters, who were marching in Al Zubeiri street, injuring dozens.
Snipers targeting the rally were stationed on top of buildings, activists said.
"We are here today to demonstrate our undefeated will to change this regime that ruled us, by the army, for 33 years," said protester Ahmed al-Hashidi.
Videos uploaded online showed men carrying injured people with blood on their faces and chests, as gunshots were heard in the background.
The opposition television broadcaster Suhail reported that government forces were preventing ambulances from reaching the injured.
However, an Interior Ministry source denied the protesters death, describing the numbers as "false reports for the purpose of deception and forgery."
Meanwhile, four opposition tribesmen were killed in clashes with Saleh's forces in the northern parts of Yemen.
Blasts and gunfire were heard throughout the morning, as Republican Guards fought armed opposition tribesmen in the district of Hasaba.
Saleh's government also accused the opposition Islah party and supporters of the leader of the Hashid tribe, Sheikh Sadiq al-Ahmar, of shelling residential areas, killing a number of people.
Al-Ahmar and his followers reside in Hasaba area, which have seen fierce clashes since May when al-Ahmar declared his support for protesters.
Millions of Yemenis have been protesting since February demanding the ouster of Saleh.
At least 1,480 people had been killed in clashes between Saleh's loyalists and his opponents by the end of September, according to government figures.
...