The men were apprehended Thursday at Istanbul Ataturk Airport, where they were trying to enter the country using fake passports, The Journal of the Turkish Weekly reported Friday.
The unidentified suspects were detained by Turkey's anti-terrorism squad before they were turned over to the Istanbul police for questioning, hurriyet.com.tr reported.
U.S. Ambassador Christopher Stevens and three other U.S. diplomatic staff employees were killed Sept. 11 by suspected militants during protests at the U.S. Consulate in Benghazi over "The Innocence of Muslims," a U.S.-made film that denigrates the Prophet Muhammad.
Earlier Thursday, a Jihadi Salafi leader said Egyptian jihadist Mohamed Gamal Abu Ahmed wasn't involved in the attack on the consulate, rejecting a U.S. newspaper report.
Mohamed al-Zawahiri spoke out against an article in The Wall Street Journal that linked Ahmed to the attack on the consulate, al-Masry al-Youm reported.
Zawahiri said the Jihadi Salafism movement isn't associated with acts of violence and that Ahmed is innocent.
He said the United States was trying to create problems between the movement and Egyptian President Mohamed Morsi.