A total of 41 people have been arrested in connection with the terrorist attack on Istanbul's Ataturk airport Tuesday night.
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Seventeen people were arrested Friday in Gazientep, a Turkish city near the Syrian border, the city's governor announced. Several digital documents were seized when the suspects were detained, the governor's office said.
Overnight, 11 people were arrested after a series of anti-terror raids. Thirteen others have arrested. Three of those arrested were foreign nationals, but their nationalities were not identified.
It is unclear if the raids were directly linked to the attack.
The death toll from the attack climbed to 44 Thursday. Turkish state media identified two of the three attackers as Rakim Bulgarov and Vadim Osmanov. The men hailed from Russia, Kyrgyzstan and Uzbekistan.
The three men opened fire with guns at an airport security checkpoint Tuesday night before blowing themselves up, Turkish officials said. No one has claimed responsibility for the attack, but Turkish Prime Minister Binali Yildirim has said that all signs point to the Islamic State group, while CIA director John Brennan said the attack "bears the hallmarks" of the terrorist group's "depravity."
ABC News' Engine Bas contributed to this report.