FACTBOX-Sixth Harry Potter movie set for release

(Reuters) - The sixth film in the Harry Potter series, "Harry Potter and the Half-Blood Prince", opens in theatres on July 15. It is based on the novel by J.K. Rowling.

The film is directed by David Yates, who also directed the 2007 blockbuster "Harry Potter and the Order of the Phoenix".

Following are some facts about the Harry Potter films and the novels they are based on:

THE MOVIES:

* The most recent Potter movie, "Harry Potter and the Order of the Phoenix," opened in July 2007 and grossed $77.1 million (47.2 million pounds) in its first five days, eventually ringing up $292 million in North America.

-- In Britain the movie grossed over 49 million pounds, making it the top UK box office performer in 2007.

* Warner Bros. have distributed five Harry Potter movies, amassing a worldwide box office tally of $4.5 billion. After "Half-Blood Prince", there are two more to come, with the last of the seven Potter books being divided into two movies.

* Daniel Radcliffe, who played the central role of Harry throughout the film series, once again heads the cast in Half-Blood Prince. Rupert Grint and Emma Watson reprise their roles as young wizards Ron Weasley and Hermione Granger, who along with Harry, are facing new challenges and dangers following Lord Voldemort's return.

THE NOVELS: