A community group in the Indian city of Calcutta says it has been sued by JK Rowling, the author of the Harry Potter books, for breach of copyright.

The group has been building a huge model based on Hogwarts School of Witchcraft and Wizardry as part of celebrations for a Hindu festival.

A court in the capital, Delhi, will start hearing the case on Friday.

Next week's Durga Puja festival is a huge event in eastern India - thousands pay homage to the Hindu goddess Durga.