Several wounded in New Year's attack on Istanbul night club

Medics carry a wounded person at the scene after an attack at a popular nightclub in Istanbul, early Sunday, Jan. 1, 2017. Istanbul Governor Vasip Sahin said that an armed assailant has opened fire at a nightclub in Istanbul during New Year's celebrations. Turkish authorities have banned distribution of images relating to the Istanbul attack within Turkey.(IHA via AP) (The Associated Press)

Young people leave from the scene of an attack in Istanbul, early Sunday, Jan. 1, 2017. An assailant believed to have been dressed in a Santa Claus costume and armed with a long-barrelled weapon, opened fire at a nightclub in Istanbul's Ortakoy district during New Year's celebrations, killing dozens of people and wounding dozens of others in what the province's governor described as a terror attack. (AP Photo/Halit Onur Sandal) (The Associated Press)

People leave as medics and security officials work at the scene after an attack at a popular nightclub in Istanbul, early Sunday, Jan. 1, 2017. Turkey's state-run news agency says an armed assailant has opened fire at a nightclub in Istanbul during New Year's celebrations, wounding several people.(IHA via AP) (The Associated Press)

Turkey's state-run news agency says an armed assailant has opened fire at a nightclub in Istanbul during New Year's celebrations, wounding several people.

The Anadolu Agency said the attack occurred in Istanbul's Ortakoy district.

Footage from the scene showed at least six ambulances with flashing lights and civilians being escorted out. Media reports said police have cordoned off the area and an operation is ongoing.