5 Detained in Turkey New Year's Eve Terror Attack Investigation

Officials detained five additional people overnight in the search for the suspect accused of gunning down 39 people in a New Year's Eve attack at the Reina nightclub in Turkey.
2:02 | 01/04/17

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Transcript for 5 Detained in Turkey New Year's Eve Terror Attack Investigation
We move overseas now for the latest on the deadly new year's eve terrorist attack. Turkish officials are searching for the killer. There's the suspect. Alex Marquardt is on the scene, takes us inside the nightclub. Reporter: We're inside the Reina nightclub. Once so popular with tourists and Turkey's elite. Now eerie and empty. Little changed since the horrible night. The bar still piled high with bottles and glasses. This new year started in way no one could ever have imagined. Bullet holes. Blood stains on the wall. The remnants of a celebration turned into a nightmare. This morning, we walked through the club. Unnervingly frozen in the moment of the massacre that took 39 lives. As the gunman made his way through the club, the guests were so desperate to flee that around 50 of them jumped here into the frigid waters to escape. And you're right there. Ali is the manager of Reina. As bullets land around him, you can see him falling. The gunman ran past and shot the man next to him. Did you think you would survive? I survived, he tells me. But I'm not happy to be alive. The trauma clearly so fresh and painful. This morning, Turkish authorities say they know the shooter's name and have his fingerprints from the gun he left behind. They've tracked his movements and arrested dozens said to be connected to the take, including the man's wife, who said she had no idea he was affiliated with ISIS. For now, the killer remains on the run. With the manhunt in its fourth day, the shooter could have gotten out of istanbul and could be anywhere in the country, even farther. He's suspected of having fought with ISIS in Syria. The fear is that he could slip back across that border into isis-held territory. George? Okay, Alex, thank you very

This transcript has been automatically generated and may not be 100% accurate.

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