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Yemen: 37 killed in Sanaa clashes Yemen: Street battles in Sanaa 'kill 39'
(about 2 hours later)
At least 37 people have been killed in overnight fighting as clashes intensified in the Yemeni capital, Sanaa, doctors and officials say. At least 39 people have been killed in overnight fighting as clashes intensified in the Yemeni capital, Sanaa, doctors and officials say.
Violence escalated after a ceasefire broke down between security forces and fighters loyal to Sheikh Sadiq al-Ahmar, head of a tribal confederation.Violence escalated after a ceasefire broke down between security forces and fighters loyal to Sheikh Sadiq al-Ahmar, head of a tribal confederation.
Analysts say the conflict threatens to drag Yemen into civil war.Analysts say the conflict threatens to drag Yemen into civil war.
President Ali Abdullah Saleh is resisting international pressure to step down after 33 years in power.President Ali Abdullah Saleh is resisting international pressure to step down after 33 years in power.
Witnesses reported heavy fighting in the capital overnight as both sides blamed each other for breaking the ceasefire. On Tuesday, the US urged him to "to move Yemen forward" by signing a Gulf Co-operation Council-brokered deal that would see him hand over to his deputy in return for an amnesty from prosecution.
On Wednesday morning, witnesses also reported loud explosions coming from the north of Sanaa, but the reason was not clear. At least 350 people have been killed in clashes since protesters began demanding Mr Saleh's immediate resignation in January, inspired by the uprisings in countries such as Tunisia and Egypt.
The defence ministry accused tribesmen of seizing the headquarters of the ruling General People's Congress and other offices in Sanaa. 'Very powerful explosions'
The most recent fighting between supporters of Sheikh Ahmar, who leads the powerful Hashid tribal federation, and security forces loyal to the president began in the capital's northern Hassaba district on Tuesday.
People here are extremely concerned that the situation could turn into a civil war, especially if tribes from outside Sanaa join the fighting.People here are extremely concerned that the situation could turn into a civil war, especially if tribes from outside Sanaa join the fighting.
Opposition groups accuse the president of arming civilians and starting the clashes, but they are also angry with tribesmen - especially the Ahmar tribe - for getting involved.Opposition groups accuse the president of arming civilians and starting the clashes, but they are also angry with tribesmen - especially the Ahmar tribe - for getting involved.
Yemen is a complicated country with a tribal system. Guns are widely available.Yemen is a complicated country with a tribal system. Guns are widely available.
In Sanaa, people have started fleeing the area of Hassaba where attacks in recent days were concentrated.In Sanaa, people have started fleeing the area of Hassaba where attacks in recent days were concentrated.
Pro-democracy activists are concerned that the violence is detracting from their peaceful demands for change. They are calling on the international community to safeguard their movement.Pro-democracy activists are concerned that the violence is detracting from their peaceful demands for change. They are calling on the international community to safeguard their movement.
However, sources close to Sheikh Ahmar said government forces had attacked his compound in the north of the city. Both sides blamed each other for breaking a ceasefire announced on Friday after a week of clashes during which tribesman seized several government ministries and buildings and more than 115 people were killed.
One report said Presidential Guard units had also shelled the headquarters of a brigade where the commander was suspected of being about to defect to the opposition. The defence ministry said tribesman had occupied a building near the presidential palace, a day after they seized control of the headquarters of Mr Saleh's ruling General People's Congress and the interior ministry.
Sources close to Sheikh Ahmar meanwhile said security forces had attacked his compound in al-Hassaba. Artillery fire had caused heavy damage, and electricity and water supplies had been cut, they added.
Residents said there had been fighting in the streets throughout the night in the area and several explosions on Wednesday morning.
"There are very powerful explosions. Sounds like missiles or mortars. May God protect us," one person told the Reuters news agency.
There were also reports that a unit of the elite Presidential Guard, led by one of Mr Saleh's sons, had attacked the headquarters of an army brigade responsible for guarding sensitive government buildings.
Sources said the government suspected the brigade's commander, Brig-Gen Mohammed Khalil, was about to defect to the opposition.
Fighting also spread to other areas of the city, with tribesmen seizing the office of the general prosecutor in north-western Sanaa, a five-storey building in the southern district of Hadda, and near the city's airport.
Medical officials in Sanaa said casualties included fighters from both sides.Medical officials in Sanaa said casualties included fighters from both sides.
On Tuesday, another 12 protesters were shot dead in the southern city of Taiz following a move by security forces to remove the protest camp from the city centre. Yemen's official news agency, Saba, called the tribesmen "armed gangs" and said they had looted state property from the seized buildings.
There were also further clashes in the town of Zinjibar where government forces have been battling fighters described as al-Qaeda militants. On Tuesday, another 12 people were shot dead in the southern city of Taiz after security forces opened fire on anti-government protesters who were attempting to re-establish a protest camp cleared the previous day.
Mr Saleh, who has been in office for 33 years, is refusing to sign a deal to transfer power to help end the crisis. There were also further clashes in the coastal town of Zinjibar where government forces have been battling Islamist militants. Five soldiers were killed in an ambush on Tuesday, officials said.
On Tuesday, a US state department spokesman urged him to leave office "and to move Yemen forward".