A major fire has destroyed a museum in the Indian capital, Delhi, the BBC reported.

The blaze started on the top floor of the National Museum of Natural History early on Tuesday and rapidly spread to all seven floors, reports said.

More than 30 fire engines tackled the blaze, which was brought under control in four hours. Six firemen were injured.

It is not yet clear what caused the fire at the 38-year-old museum in the heart of the city.