MUMBAI: Steven Spielberg has confirmed that he was working on the fourth part of Jurassic Park. He said that the sequel will be an improvement from the last instalment that was released in 2001.

"The screenplay is being written right now by Mark Protosevich. I‘m hoping that will come out in the next couple of years. We have a good story. We have a better story for IV than we had for III," the 64-year-old filmmaker has been quoted to have said.

Based on the best-selling Michael Crichton novel, Jurassic Park went on to be a cult in itself grossing $350 million in the US when released in 1993.

Starring Sam Neill and Jeff Goldblum, the film spawned two sequels.