Two high profile government security buildings have been bombed in the heart of the Syrian capital Damascus killing at least 27 people and wounding 150 or so more.
State television blamed both explosions on terrorists trying to overthrow President Bashar al-Assad.
Syria’s news agency Sana said the first device detonated outside an air security intelligence centre.
Witnesses said the explosion was enormous.
Residents loyal to the Assad regime living nearby reacted angrily, believing that the attacks were foreign inspired, and had targeted civilians.
“No one in the world will be able to twist our arm,” said one. “We will continue to support our country. We will sacrifice our blood, our children and our souls for Syria. No matter what the opposition do, they will remain smaller than the smallest boot of any Syrian soldier.”
There were similar scenes of destruction at the Criminal Police Headquarters.
The Al-Qaeda leader Ayman al-Zawahri posted a message on the internet last month urging Muslims around the region to help the Syrian rebels, who have been trying for a year to oust the regime.
The attacks echoed similar suicide bombings in Damascus and Aleppo in December and January that killed 98 people.