More than 30 anti-regime protesters were shot dead and over 100 wounded during a demonstration in the Yemeni capital Sanaa on Friday, medics and witnesses said.

According to witnesses, pro-regime "thugs" opened fire on protesters calling for the ouster of President Ali Abdullah Saleh from houses close to the square at Sanaa University.

Plainclothes Syrian security men broke up an apparently spontaneous demonstration by dozens of people after Friday prayers at the main mosque in Damascus, Agence France Presse reporters witnessed.

"God is greatest," a crowd inside the men's section of the Omayyad mosque started chanting in crescendo after prayers.

An indiscriminate attack on civilians in Benghazi would constitute "war crimes", the prosecutor of the International Criminal Court warned the Libyan government on Friday.

"Any indiscriminate attack against civilians would constitute war crimes," prosecutor Luis Moreno-Ocampo told journalists in The Hague.

Thousands of Bahraini Shiites defied martial law to renew their pro-democracy protests on Friday, as they gathered after prayers and to bury a victim of the security forces' bloody crackdown.

"We sacrifice blood and soul for Bahrain," they chanted, alongside calls for restraint and non-violence in the face of alleged crimes against international law committed by the Sunni-ruled kingdom's police and military.

Pro-democracy activists who spearheaded the mass rallies that ousted Egyptian strongman Hosni Mubarak were poised for a new protest Friday on the eve of a referendum on the military's transition plans.

The Coalition of the Youth of the Revolution called the rally in Cairo's Tahrir Square to urge voters to reject an amended constitution intended to underpin fresh presidential and parliamentary elections this year and a swift return to civilian rule.

A son of Libya Moammar Gadhafi on Friday said his family was "not afraid" after the United Nations approved air strikes against forces loyal to his father's regime.

"We are in our country and with our people. And we are not afraid," Seif al-Islam Gadhafi told ABC News Nightline from the Libyan capital Tripoli.

Qatar will contribute to international efforts to protect Libyan civilians and urged quick action to impose a no-fly zone on the North African country, state news agency QNA reported on Friday.

"Based on the U.N. Security Council resolution, Qatar has decided to contribute in the efforts aiming at stopping bloodshed and protecting civilians in Libya," QNA quoted a foreign ministry official as saying.

Military action to protect civilians from Libyan leader Moammar Gadhafi's forces will come within "hours" and France will participate in the strikes, government spokesman Francois Baroin said Friday.

The strikes will come "rapidly... within a few hours," he told RTL radio after the U.N. Security Council on Thursday cleared the way for air strikes by approving "all necessary measures" to impose a no-fly zone on Libya.

Syria on Thursday charged 32 demonstrators with attacking the reputation of the state a day after they joined a rally calling for the release of political prisoners, a rights group said.

The 32 protesters, including rights activist Suhair Atassi, were detained on Wednesday at a Damascus rally organized by the relatives of political prisoners to petition for their release.

A senior U.S. official warned Thursday there was a "very real danger" that Libyan leader Moammar Gadhafi could return to terrorism if he is allowed to consolidate his control over the fractured nation.

There is "a very real danger that if Gadhafi is successful on the ground, that you also face a number of considerable risks as well, the dangers of him returning to terrorism and violent extremism himself," under secretary of state for political affairs William Burns told U.S. senators.