JK Rowling has hinted the character Albus Dumbledore will feature in future films in the Fantastic Beasts and Where to Find Them series.
The author has already revealed she has planned scripts for a total of five movies in the franchise, the first of which is released next month.
Speaking about the film at a fan event in London, Rowling said: “We do talk about Dumbledore and Grindelwald.”
It is not known who would play the role of Dumbledore in future films.
Richard Harris, who died in 2002, and Michael Gambon have previously portrayed the character in the Harry Potter films.
Speaking at the same event, director David Yates said: “We can’t tell you too because we’d have to kill you all, but we do mention Dumbledore and he features in a wonderful scene between Colin [Farrell] and Eddie [Redmayne].
“Grindelwald does feature in the background and is going to become a much more prominent feature moving forward,” he added.
In the stories, Dumbledore and Grindelwald were best friends but their relationship broke down decades before the events of the first Harry Potter book.
Rowling has previously spoken about the close relationship between the pair, adding the Hogwarts headmaster, who she confirmed is gay, was once had romantic feelings for the dark wizard.
Fantastic Beasts and Where to Find Them is a prequel to the Harry Potter series, set 70 years before the first book and film.