NEW : Students hold rallies in Yemen 's capital . Yemeni government sources say President Ali Abdullah Saleh left Oman Monday . He is scheduled to return to Yemen in February , the embassy says . The State Department says Saleh can come to the US for medical treatment .
NEW : Protesters continue demonstrations in Yemen 's capital . Yemeni government sources say President Ali Abdullah Saleh left Oman Monday . He is scheduled to return to Yemen in February , the embassy says . The State Department says Saleh can come to the U.S. for medical treatment .