Plans to make 'Purge 3' are already in the works.

Jason Blum, the producer of 'The Purge', as well as 'Sinister' and 'Insidious', hopes the next instalment of the 'Purge' franchise will go back to the origins of the first film, which hit cinema screens in 2013 and starred Ethan Hawke.

He said: ''I would like to tell a story about the Revolutionaries. I would like to tell the story about the first purge. Purge 1 was after five years, Purge 2 after six years; so it would be fun to see the first time it happened.''

'The Purge', which is set in the near-future in Los Angeles, far surpassed its relatively modest budget at the box office and led to a sequel.

'The Purge: Anarchy' was released worldwide on July 18, 2014 and was another huge box office success, grossing nearly $100 million dollars, having only cost $9 million to make.

And the financial success of the franchise makes it appear as though a third film is inevitable, with speculation suggesting it could be released as early as summer 2015.