Accusations and denials grip Turkey as the country reels from its fourth deadly bombing since last June.
- Davutoglu visits the scene and hospital
- PYD denies involvement
The Turkish prime minister has visited the scene of a suicide bombing that claimed 28 lives earlier this week.
Ahmet Davotoglu laid flowers at the scene of the blast in Ankara.
Dozens more were injured in the attack which targeted buses carrying military personnel.
Mr Davotoglu went on to visit the hospital where many are being treated.
Who planted the bomb?
Turkey has blamed Kurdish militants at home and in neighbouring Syria.
Mr Davotoglu has identified the bomber as Salih Necar who was in his twenties and from the Hasakah region of northern Syria.
The prime minister says Necar was a member of the Syrian Kurdish militia group, YPG.
He also accused the Syrian government of involvement in the Ankara bombing.
However, the leader of the PYD party, of which the YPG is the military wing, has denied
The Kurdish Syria Democratic Forces, a coalition of Arab and Kurdish groups in Syria, has also condemned the bombing.
What they are saying
“We are completely refuting it. Ahmet Davotoglu is preparing for something else because they are shelling us, as you know, for the past week.”Saleh Muslim, leader of the Syrian Kurdish PYD party.