New Delhi, Jan. 9 -- Turkish Airlines on Friday, cancelled at least five fights to the Iranian capital Tehran, where protests against the rising cost of living entered the twelfth day.

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Five other flights operated by Iranian airlines have also been cancelled, according to the Istanbul Airport app, while seven others remain scheduled.

Iranian protesters shouted and marched through the streets into Friday morning after a call by the country's exiled crown prince for demonstrations, despite Iran's warning of cutting off the nation from the internet and international telephone calls.

The Iranian government was already battling an economic crisis after years of sanctions and recovering fr...