Dozens of people have died in a cold wave sweeping through northern India.
Most deaths so far have taken place among the homeless and elderly, and local authorities have been asked to arrange shelter for the vulnerable.
Temperatures dropped as low as 0C in several places, including the city of Amritsar in Punjab.
Poor visibility because of dense fog has also affected rail and air traffic in the region with several flights and trains cancelled, leaving tens of thousands of passengers stranded.
The capital, Delhi, has been going through one of the coldest winters in recent years. Thick fog has enveloped the city and traffic is moving slowly.
On Saturday, the fog caused two separate train accidents in Uttar Pradesh leaving 10 people dead and nearly 50 injured.
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