Hunt continues for Istanbul nightclub attacker

At least 39 dead, including 25 foreigners

Witnesses describe panic in club

British tourists urged to be vigilant

More than two dozen foreign nationals celebrating the start of the new year in Istanbul were among the victims of a shooting spree at a popular nightclub that left 39 dead and dozens wounded.

Turkish police were on Sunday hunting an unidentified gunman who opened fire in the early hours of 2017 in the Reina club, one of the city's most famous venues.

The attacker left his gun before "taking advantage of the chaos" and fleeing the scene, Binali Yildirim, Turkey's prime minister, said.

President Recep Tayyip Erdogan condemned the attack, which left 69 wounded, and offered condolences for those who lost their lives, including "foreign guests".