Syrian state-run television says a bomb has ripped through the third floor of the state TV building in Damascus.

The report says at least three people were wounded in Monday's bomb attack targeting the building which also houses the country's state radio. The building is located at the Umawiyyeen roundabout in downtown Damascus.

The Syrian capital has seen a string of suicide attacks and other bombings in the past few months as the country's civil war has escalated.

A pro-government private Syrian TV station, Al-Ikhbariya, showed pictures of employees inspecting damages in the TV building and tending to a wounded colleague. The Syrian state TV remained on air.