India heatwave kills more than 750 people as temperatures near 50C

Delhi and Allahabad are among the cities being hit by extreme temperatures

The number is feared to be an underestimate of the true toll (AP)

More than 750 people have died in southern India since the middle of April as soaring summer temperatures scorch the country.

The Indian Meteorological Department has issued red warnings for many eastern and central states as the conditions continue over the coming days.

The states of Telangana and Andhra Pradesh have seen some of the highest temperatures, while the north-eastern city of Allahabad also hit 47C on Sunday and Delhi saw 45C.

People are being advised to stay out of the sun, eat well and drink plenty of water but there are fears for the millions of homeless people, including young children, who have no shelter.

There are fears that homeless people unable to access water and proper shelter will be worst hit (AP)

The Centre for Holistic Development, a charity in the capital, told the Hindustan Times that the heat had claimed the lives of 186 people by Saturday, most of whom were homeless.

That number is feared to be an underestimate of the true toll in the city of 9.8 million people and an official figure has not yet been released.

Officials in the states of Telangana and Andhra Pradesh reported more than 400 deaths from sunstroke and other heat-related conditions between Wednesday and Saturday.

People trying to keep cool at a water park in Hyderabad (AP)

Deaths were also reported in Odisha state and hospitals in affected areas have been flooded with patients.

More casualties are expected as the extreme heat continues until at least Wednesday, with forecasters issuing severe warnings for most eastern states and less severe alerts for swathes of central India where temperatures will top 40C.

Thunderstorms and dust storms will follow the heat in Delhi, Uttar Pradesh, Rajasthan and Punjab.

People are being urged to look out for the signs of heat exhaustion, including fatigue, dropping blood pressure, nausea and sweating, and immediately try and cool themselves down.

Indian boys trying to cool down in a fountain in Delhi (AP)

If it is not treated, it can develop into potentially deadly heatstroke as the body’s temperature rises beyond safe levels.

Symptoms include confusion, dry skin, hyperventilation, cramping and later seizures, organ failure and death.