Massive earthquake could hit Istanbul at any moment with just SECONDS warning, say scientists
Epicentre on the North Anatolian Fault Zone could be below Istanbul
The city is home to more than 15 million people and thousands of tourists
Marmara section has not had a bad earthquake since 1766 and is due to rupture
A new report suggest the city they might only know seconds in advance
UN estimates 7.5 magnitude earthquake would kill 70,000 - 90,000 people
More:Earthquake could hit Istanbul at any moment | Daily Mail Online