The Foreign Office has warned British nationals visiting India to remain vigilant in the wake of recent bomb blasts that rocked Delhi, killing 24 people.

The Hindustan Times reports today that over 600,000 British tourists visit India each year.

The FCO warns there is a “high threat of terrorism throughout India” and is urging British tourists to remain on their guard, particularly in busy areas like shoppping malls and train stations.

Airports remain on high alert. Delhi newspapers are reporting a shortage of sniffer dogs and promised to hire more.