ll and Toby Jones are being eyed for roles in the "Jurassic World" sequel.

Details of the upcoming blockbuster -- which will see actors Chris Pratt and Bryce Dallas Howard return -- are under wraps, but director Juan Antonio Bayona has offered mystery parts to the two actors, and is currently auditioning to fill other roles in the film, reports variety.com.

While the sequel is being kept a top secret, Colin Trevorrow, who co-wrote and directed "Jurassic World" says that it will be "more suspenseful and scary" than the 2015 movie, and that Bayona was specifically brought in to offer his own unique skills to the project.

"It will be more suspenseful and scary," Trevorrow said.

"It's just the way it's designed; it's the way the story plays out. I knew I wanted Bayona to direct it long before anyone ever heard that was a possibility, so the whole thing was just built around his skill set," Trevorrow added.

Director Bayona recently shared that he would be working with a budget of $260 million to $110 million more than the reported $150 million cost of "Jurassic World".

The "Jurassic World" sequel is scheduled to release in 2018.