They literally set fire to their own prison last week and blamed prisoners even though there was video footage of explosives being lobbed in from outside.

And this combined with their bald faced lie about the drones in Ukraine.

Seems very likely this was an attack designed to distract from the protests. An "IS-linked" news agency has already "claimed responsibility" but it's an unreliable agency known for falsely claiming IS responsibility for attacks it had nothing to do with.