As many as 600 New Year's Eve revelers were inside the Reina nightclub when a gunman entered and started firing. Turkish officials said at least 39 people were killed and nearly 70 were injured.
Istanbul Nightclub New Year's Eve Terror Attack
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People run from a nightclub where a gun attack took place during a New Year party in Istanbul, Jan. 1, 2017.
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Young people leave the scene of an attack in Istanbul, early Jan. 1, 2017. Turkey's state-run news agency said an armed assailant has opened fire at a nightclub in Istanbul's Ortakoy district.
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People flee from a nightclub where a gun attack took place during a New Year party in Istanbul, Jan. 1, 2017.
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Police secure area near an Istanbul nightclub, Jan. 1, 2017.