A powerful explosion has rocked the Turkish capital, Ankara, near government buildings and a secondary school, injuring at least 15 people.

Officials suspect a bomb may have been planted in a vehicle prior to the Tuesday blast. The blast damaged shops, nearby offices and numerous vehicles.

Police immediately cordoned off the area in the event of a secondary explosion.

No groups or individuals claimed responsibility for the blast.

There are no reported fatalities, but several of the wounded are seriously injured.