Authorities in Turkey have established the possible links and location of the main suspect behind the New Year's Day attack at an Istanbul nightclub.
In an interview with broadcaster A Haber, the country's Deputy Prime Minster Veysi Kaynak said he could not rule out the possibility of the gunman fleeing abroad.
It is believed the suspect is a member of the Uighur community - a Muslim group who live in western China.
He also said it was clear the attacker acted alone, but could have been helped by others.
Bullet marks on tables, punctured cushions and a single high-heeled shoe are left as testaments to the New Year massacre at the Reina club.
At least 39 people were killed when a gunman opened fire on a nightclub where more than 500 revellers were celebrating the New Year.