Two explosions have hit a peace rally in the Turkish capital Ankara, causing multiple casualties.
According to a Turkish news agency, at least 20 people have been killed. The blasts took place near the city's central train station.
The target appears to have been a march calling for an end to the violence with the Kurdish separatist group, the PKK.
Prime Minister Ahmet Davutoglu is being briefed by the interior and health ministers.
Reports say the government is investigating whether the explosions were a suicide attack.