A car bomb has exploded in the Turkish capital Ankara, killing 32 people and wounding more than 100, the health ministry has said.
The explosion happened in Guven Park in the Kizilay district, a key transport hub and commercial area.
Several vehicles at the scene were reduced to burnt-out wrecks, including at least one bus.
Last month, a bomb attack on a military convoy in Ankara killed 28 people and wounded dozens more.
The Hurriyet newspaper said the latest blast happened at about 18:40 (16:40 GMT) and the area was evacuated in case of a second attack. Many ambulances were at the scene, it added.
No group has yet claimed the attack. However, a security official told Reuters news agency that initial findings suggested it was the work of the outlawed Kurdistan Workers' Party (PKK) or an affiliated group.
President Recep Tayyip Erdogan said terror groups were targeting civilians because they were losing their struggle against Turkish security forces.
He said such attacks "increase our determination to fight terrorism".