A Dumb and Dumber sequel will start shooting in September.

Peter Farrelly - who directed the first instalment of the comedy film in 1994 - has confirmed Jeff Daniels and Jim Carrey are on board to create the follow-up, which will not be similar to Dumb and Dumberer, a 2003 prequel in which neither of them starred.

"We're getting set to shoot Dumb and Dumber 2 in September. It's the first sequel we've ever done and we've got Jim Carrey and Jeff Daniels back. We did not do Dumb and Dumberer. That was a studio thing. So we've always wanted to do a sequel and finally Jim called up. Jeff always wanted to do it. We always wanted to do it. Jim was busy, but he called and said, 'We've got to do this thing again,'" Peter said.

No story is yet known for the picture. The first film told the tale of two idiotic friends - Lloyd Christmas and Harry Dunne - and their mis-adventures on a road trip around the country. It took $247 million at the international box office.