Horowitz, writer of the popular Alex Rider series of novels, said that he has been asked to write a sequel combining Hergé's classic Tintin stories The Seven Crystal Balls and Prisoners Of The Sun.
"As we speak I've been hired to write Tintin," Horowitz told Radio 5 host Richard Bacon. "They've got [The Chronicles Of Tintin: The Secret Of The Unicorn] coming out at Christmas, and if that film is a success and works and gets an audience I'm writing the sequel to it."
Horowitz also confirmed that the potential sequel would be titled Prisoners Of The Sun, which will be directed by Peter Jackson.
The writer was appearing on the show to promote Scorpia Rising, the final book in his Alex Rider series.
The Adventures Of Tintin: The Secret Of The Unicorn will be released in cinemas on UK cinemas on October 26, and in the US on December 23.