Turkish Prime Minister Binali Yildirim has said terrorism "cannot intimidate" the Turkish people. 
Yildirim held a short news briefing in Istanbul on Sunday afternoon after he visited several victims injured in this morning's gun attack on a nightclub in the city. 
"Terrorism is humanity's common problem. Its aim is to break our unity and brotherhood," Yildirim said, telling reporters that Turkey was in a de-facto war with the PKK, the Fetullah Organization and ISIS. 
Yildirim said a thorough investigation was underway to reveal the identity of the attacker who opened fire on partygoers at the Reina nightclub in Istanbul's Ortakoy district in the early hours of New Year's Day. 
At least 39 people, including a police officer, died in the assault. Sixty-nine people were also injured. 
"Our police and security units are working intensely. We will later share the information gathered with the public," Yildirim said.

Source: QNA