Syria: 'Conspiracy theories growing' about suicide bomb
Three men at the heart of President Assad's defence team have died in a suicide bombing, Syrian state TV says.
The president's defence minister, brother-in-law and head of his crisis team were at a meeting at national security headquarters in Damascus.
No footage has yet emerged of the attack in which the national security chief and interior minister were also said to have been wounded.
The BBC's Jim Muir says in the past, when a suicide bombing has happened, there are usually images of the aftermath broadcast on Syrian state television.