A loud explosion has been heard in the Turkish capital Ankara with ambulances heard rushing to the scene.
The explosion on Thursday occurred in the boiler room of Ankara Tax Chamber in the Cukurambar district, private broadcaster NTV quoted the Ankara governor as saying.
It said the building was empty except for security personnel.
There were no immediate reports of injuries or casualties.
Images from the scene of the explosion showed the building had received extensive damage and the windows of nearby buildings and cars were also blown out.
