The final film in the Divergent trilogy will be released in two parts.

Deadline confirmed today (April 11) that Allegiant - the final book in Veronica Roth's dystopian young adult book trilogy - will be adapted into two films.

This replicates the pattern established first by the Harry Potter film franchise, and then later with cinema adaptations of both Twilight and The Hunger Games.

“Veronica Roth brings her captivating story to a masterful conclusion in Allegiant, a rich, action-packed book with material that is ideally suited to two strong and fulfilling movies,” said Lionsgate Motion Picture Group co-chairmen Rob Friedman and Patrick Wachsberger.

“The storytelling arc and world of the characters lend themselves perfectly to two films, a storytelling strategy that has worked very well for us on the two Twilight: Breaking Dawn films and about which we're tremendously enthusiastic for the two upcoming Mockingjay films of The Hunger Games franchise.”

The second instalment, Insurgent, will begin filming in May, and is set for a 2015 release.

Allegiant Part 1 is currently pencilled-in for release on March 18, 2016, with the finale following a year later on March 24, 2017.

The films will reportedly be produced separately, rather than back-to-back.

Divergent debuted at number one at the US box office a fortnight ago, and has so far made $116 million at the US box office.