20 victims have been identified so far. 15 were foreigners and five were Turks. Another 65 people were being treated in hospital. Many revellers threw themselves into the water in panic. Pics/AFP

Istanbul: Thirty-nine people, including many foreigners, were killed yesterday when a gunman, supposedly dressed as Santa Claus, went on a rampage at an exclusive nightclub in Istanbul where revellers were celebrating the New Year.