Author J K  Rowling has revealed that she is working on another children’s book.

In an interview with BBC radio, Rowling said that she had written part of a children’s book that she really loved, E!Online reports.

However, J K Rowling did not reveal the topic of the new book nor whether it would be something like ‘Harry Potter.’

The 50-years-old novelist said that she also had ideas for adult books, adding “I sometimes worry I’ll die before I’ve written them all out. That’s my mid-life crisis.”