"He is a more advanced terrorist than a terrorist from the PYD or the YPG," Erdogan said. Although no one has claimed responsibility for the attack, Turkish officials say they believe it was the work of IS. Turkish President Recep Tayyip Erdogan declared Saturday that Syrian President Bashar Assad was a "more advanced terrorist" than the Islamic State group, despite the deadly attack on Istanbul's Ataturk Airport that Turkish officials blame on IS. Earlier, the Istanbul governor's office said 52 people were still in the hospital — 20 of them in intensive care — four days after the devastating airport attack. Turkish officials also were not able to confirm Chatayev's possible role in the deadly attack.

Source: ABC News July 02, 2016 14:34 UTC