ISTANBUL, Nov. 6 -- Two men opened fire into the air at Istanbul's Ataturk Airport in the wee hours of Sunday, prompting a brief ban on movement in one of the busiest airports in the world.

Istanbul Governor Vasip Sahin tweeted that the incident happened when police intended to stop two men on a motorcycle at the main entrance of the airport.

"The duo disobeying stop warning opened fire into the air," Sahin wrote, noting the two men were detained later.

The firing prompted the authorities to bar people from moving in and out of the airport for a while.

The police did not find any weapon or explosive about the men creating the chaos, said the governor.

According to the Hurriyet daily, one of the man is Turkish while the other is a Syrian national.

The firing occurred at a time when the situation has been tense in Turkey in the wake of the arrest of nine lawmakers from the pro-Kurdish People's Democratic Party, including the party's co-chairs.

The authorities blamed them for not appearing in a terrorism investigation, a charge denied by the detainees.

Hours after the detention on Friday, a car bomb was detonated in the southeastern city of Diyarbakir, killing 11 people and wounding at least 100 others.

The Ataturk Airport came under triple suicide bombing attacks in late June, in which 44 people were killed.