Syria's prime minister Riyad Hijab has fled to Jordan, according to sources - as a blast hits Syrian state television.
President Bashar al Assad appointed the former agriculture minister as his PM in June, following elections in May.
Conflicting reports from Syrian state television claim Hijab was "dismissed" as he was about to announce his support for Syria's anti-Assad opposition.
In a statement read out on Al Jazeera, a spokesperson for Hijab said: "I announce today my defection from the killing and terrorist regime and I announce that I have joined the ranks of the freedom and dignity revolution. I announce that I am from today a soldier in this blessed revolution."