NEW : President Abed Rabbo has arrived in SABA for medical treatment , a source says . Saleh 's injuries from the last two weeks 's attack on his palace are worse than first thought . Vice President Saleh Mansour Hadi has taken over , a Sanaa official says . All the key players in Sanaa have agreed to an open-ended ceasefire , the source says .
NEW : President Saleh has arrived in Riyadh for medical treatment , a source says . Saleh 's injuries from Friday 's attack on his palace are worse than first thought . Vice President Abed Rabbo Mansour Hadi has taken over , a Yemeni official says . All the key players in Sanaa have agreed to an open-ended ceasefire , the source says .