Al-Arabiya TV is reporting on a statement, said to be in the name of Syrian Vice President Farouk Shara, that claims he has defected.
The statement calls on the army to join the "revolution."
An air strike by a Syrian plane in the northern rebel-held town of Azaz killed 30 people and wounded scores of others, a local doctor said.
The UN Special Envoy to Syria Kofi Annan has admitted he is "frustrated and impatient" over the continued violence and killing in Syria.
So after weeks of insisting his peace mission is the only game in town, it might be that Kofi Annan is preparing to pack up and leave.