Los Angeles, May 4 (IANS): On the 17th anniversary of the Battle of Hogwarts, author J.K. Rowling delivered a heartfelt apology to “Harry Potter” fans for the Weasley twin's tragic death.

The author took to her micro-blogging website Twitter on Saturday, she wrote, "Today I would just like to say: I'm really sorry about Fred. *Bows head in acceptance of your reasonable ire*."

When a fan named Brieuc Toudic asked her, "What about Tonks, Lupin?"

The 49-year-old replied, "I thought I might apologise for one death per anniversary. Fred was the worst for me, so I started with him."

Other fans seemingly couldn't accept Rowling's apology.

A fan, Lisa Thompson tweeted, "@jk_rowling i think that's the one I couldn't forgive you for :(."

Another fan wrote, "I love you Jo but I don't think I'll ever be able to forgive you for doing that tbh."

Rowling is currently working on the script for "Harry Potter" spin-off "Fantastic Beasts and Where to Find Them" which is scheduled to be released in the US on November 18, 2016.