Six people were
said to have been killed in Thursday's attack near Diyarbakir - a day after a
car bomb was detonated near a military headquarters in the Turkish capital
Ankara, killing 28 people and injuring dozens of others.
Turkey blamed
both attacks on Kurdish militants.
Prime Minister
Ahmet Davutoglu said the suicide bombing was carried out by a Syrian national,
in conjunction with Turkey's Kurdish rebels.
The Syrian,
identified as Salih Neccar, had registered as a refugee in the country in July
2014
He also said 60 to 70 militants had been killed in the overnight
air raids targeting rebel positions of the Kurdistan Workers' Party, or PKK.
Some 14 people
have been arrested in connection with Wednesday's deadly attack.
"The
attack was carried out by the PKK together with a person who sneaked into
Turkey from Syria," said Mr Davutoglu.
In an apparent
appeal to the United States, Mr Davutoglu called on allies to withdraw
their support for Kurdish militias fighting in Syria.
Turkey regards
the Syrian Democratic Union Party (YPD), and its military wing, the Syrian
Kurdish People's Protection Units (YPG) as terrorists because of their
affiliation to Turkey's outlawed Kurdish rebel group.
However, the
YPG, which has strong links to the PKK, has been fighting the Islamic State
terror group, alongside the US.
No-one has
claimed responsibility for the Ankara bombing which targeted several buses
carrying military personnel.
The rush-hour
blast was 300m in front of the Chief of Staff's Building, the base for the
heads of Turkey's Army, Air Force and Navy and close to the seat of parliament.
Salih Muslim,
leader of the YPD, denied his group were behind the Ankara attack.