JK Rowling has revealed that another character will be killed off in the sixth Harry Potter book, but she did not say which one.
Responding to a question on her website about whether any more characters would die, Rowling replied: "Yes, sorry."
'Harry Potter and the Half-Blood Prince' is due to be published next year.
Rowling killed off character Sirius Black in her fifth book 'Harry Potter and the Order of the Phoenix'.
