Turkey has arrested a number of people of Uighur origin over a deadly nightclub attack that killed 39. A state-run news agency, Anadolu reports that those detained are believed to have come from China's Xinjiang region with ties to the attacker. <br/><br/>Meanwhile, Deputy Prime Minister Veysi Kaynak said they were closing in on the gunman, who he said was possibly an ethnic Uighur. Mr Kaynak said Police have already detained dozens over the deadly new year attack, but the main suspect remains on the run.