President Recep Tayyip Erdoğan on Friday criticized terrorist organizations, in particular Daesh, once again and said that they belong in hell, as he announced that the recent suicide attack in Istanbul's Atatürk Airport was carried out by Daesh.

Speaking at the opening ceremony of Fethiye-Hasan Gümüşdağ Mosque following Friday prayers in Istanbul, Erdoğan said that Daesh claims to carry out its acts under the name of Islam, but has no relevance with the religion.

''They belong in hell,'' Erdoğan said, and added that Islam considers the killing of a single innocent person as the killing of the whole of humanity.

He underscored that the terrorists targeted innocent civilians, including women, children and the elderly, who were planning to travel.

The president also emphasized that Turkey is determined to fight the terrorists.

In May, Daesh terrorist organization announced urged their militants, through Friday sermons in mosques in Daesh strongholds in Syria, to expand terrorism in Turkey.

Previously, they called President Erdoğan 'Satan' who allegedly sold the country to the U.S. and Western powers and harshly criticized him for supporting the U.S.-led coalition against Daesh.

44 people were killed, 130 were injured on Tuesday in a triple suicide bombing and gun attack at Istanbul's main Atatürk airport, in the latest deadly strike to rock Turkey's most-populated city, which had many similarities with the deadly attacks carried out in Brussels in March.