SYRIAN KURDISH guerillas denied Turkish allegations yesterday that they were behind Wednesday’s bombing in central Ankara that killed 28 people.

Turkish Prime Minister Ahmet Davutoglu was swift to accuse the People’s Protection Units (YPG) militia of the attack, although no group had claimed responsibility.

He claimed the Kurdistan Workers’ Party (PKK) had planned the attack, which was carried out by a Syrian Kurd who had entered the country as a refugee.

The bomber was named as Salih Neccar, from the predominantly Kurdish border town of Amouda.

Turkish warplanes blitzed PKK positions in Iraq’s northern Haftanin district on Wednesday night in apparent retaliation.

Mr Davutoglu also blamed the Syrian government for working with the YPG.

“Those who directly or indirectly back an organisation that is the enemy of Turkey, risk losing the title of being a friend of Turkey,” said Mr Davutoglu, in what was also a veiled dig at the US, which has aided the YPG against Islamic State (Isis) in Syria.

The Turkish Foreign Ministry invited ambassadors of the five permanent UN security council members — Britain, China, France, Russia and the US — separately to “brief” them on the attack, along with the EU, Germany and the Netherlands.

The YPG and its parent organisation the Democratic Union Party (PYD) denied involvement in the bombing and warned Turkey against any invasion by the 18,000 troops it has massed along the Syrian border.

The Syrian Democratic Forces, a loose umbrella group of the YPG and small Arab militias, urged the international community to intensify its efforts in fighting terrorism in order “to uproot it.”

The Britain-based Syrian Observatory for Human Rights said hundreds of militants had crossed from Turkey into northern Syria on Tuesday and Wednesday.

They had come to reinforce the al-Qaida-affiliated Nusra Front and its ally Ahrar al-Sham in their defence of the border town of Azaz, which Mr Davutoglu on Monday vowed not to let fall to the YPG.

Meanwhile, the Syrian army took Kinsibba, the last stronghold of the Turkish-backed Turkmen militias in western Latakia province.