Turkish officials presented strong evidence that the terrorist group ISIS took part in planning the attack, which occurred at the airport in Istanbul , according to a senior government source CNN on Thursday.

Officials believe that male suicide bombers have been recruited from Russia, Uzbekistan and Kyrgyzstan. They arrived to Turkey from ISIS ' stronghold of raqqa in Syria and a terrorist attack. The terrorists had rented an apartment in Istanbul in the Fatih district, where one of the attackers left his passport, said a source from the Turkish government. The attack was "very well planned with the guidance of the members of ISIL," the source said.

Turkish police visited the district of Fatih and neighbors showed video and photographs of three men who they believe carried out the attack, said the residents. The woman, who also lived in the neighborhood said that a couple of days ago from the apartment was the smell of chemicals that have alarmed other neighbors. They are thought about a gas leak.

The death toll in the attack rose to 44 people. 3-year-old Palestinian boy was injured in the attack and died, according to Palestinian officials. The boy's mother died Wednesday, officials said. And the Turkish state news Agency Anadolu reports that the man Turks died in the hospital.

We will remind, terrorists rushed to the airport Tuesday night, opened fire and detonated explosives - two of the terrorists blew himself up at the international terminal building, and others in the Parking lot, officials said. The attack on the airport was 8 terrorist attack in Turkey this year. At least 140 people were killed.
sections: World News, Accidents, Accidents