The death toll for clashes in the capital Sanaa on Friday increased to at least 47 and about 617 protesters injured, according to witnesses and protest's organizers.

Some 270 anti-government protesters were wounded by live bullets immediately after Friday's prayers and 347 others were wounded by gas tear and water cannons later the day when a backup of police forces came to the scene to prevent further casualties, Xinhua cited a protest organizer  Lukman.

After the clashes, Yemeni President Ali Abdullah Saleh declared on Friday a 30-day nationwide state of emergency.

US Secretary of State Hillary Clinton said on Friday: With regard to Yemen, our message remains the same. The violence needs to end, negotiations need to be pursued in order to reach a political solution.

Meanwhile, the Arab League plans to deliberate on the worsening crisis in Yemen.

Whereas,  Hashem Ahelbarra, Al Jazeera's correspondent in Yemen said: People in Yemen have no faith in the Arab League, they don't think that the Arab League can bring any solution to this crisis which is evolving now.

U.S. President Barak Obama and UN Secretary-General Ban Ki-moon condemned the use of live ammunition by Yemen security forces against protesters on Friday.