[1/5] Police members transport the body of an unidentified person after an explosion on busy pedestrian Istiklal street in Istanbul, Turkey, November 13, 2022.
"We have evaluated that the instruction for the attack came from Kobani," Soylu said, adding that bomber had passed through Afrin, another region in northern Syria.
Hundreds of people fled the historic Istiklal Avenue after the blast on Sunday, as ambulances and police raced in.
Turkey has carried out three incursions in northern Syria against the YPG, with the latest in 2019, seizing hundreds of kilometres of land.
Condemnations of the attack and condolences for the victims poured in from several countries including Azerbaijan, Britain, Egypt, Greece, Italy, Pakistan and Ukraine.