In Yemen, shells have hit the presidential compound in the Yemeni capital, Sanaa, as pitched battles continue between government forces and armed tribesmen. One report quoted the governing party as saying the Deputy prime minister and speaker of parliament were wounded. Earlier, troops shelled the home in the south of Sanaa of Sheikh Hamid al-Ahmar, a brother of the tribal leader whose supporters they are fighting. Thousands meanwhile attended a funeral for 50 people killed in the violence. The United States has sent an envoy to the Gulf to discuss ways of stopping the violence, which has brought Yemen to the brink of civil war. More than 350 people have been killed since the uprising started in January, but least 135 of them have died in the past 10 days. Western and regional powers have been urging President Saleh to sign a Gulf Co-operation Council-brokered deal that would see him hand over to his deputy in return for an amnesty from prosecution. He has agreed to sign on several occasions, but then backed out.