Director Michael Bay arrives for the premiere of Transformers: Dark of The Moon in Times Square in New York June 28, 2011. (REUTERS/Lucas Jackson)

Director Michael Bay has dismissed reports an early copy of a script for his new Transformers movie has leaked online, insisting the material circulating the Internet is fake.

Alleged plot details from Transformers 4 emerged on the web over the weekend but the filmmaker has moved quickly to shoot down the claims, as only he and screenwriter Ehren Kruger are in possession of the storyline.

A statement released by Bay reads: "Some Internet sites this morning reported that some document recovery guy has found a legitimate 120 page script of Transformers 4. I can absolutely 100 per cent say this is completely false. The only two people in the world that have our unfinished script are Kruger and myself. Also we are only up to page 70 in our T4 script. Maybe this guy has a cartoon or something else - but definitely not our movie!"

The upcoming installment of the action series will feature Mark Wahlberg in the lead role, replacing former star Shia LaBeouf, and the Boogie Nights actor can't wait to get to work.

He recently told movie website ComingSoon.net, "I'm really excited about Transformers. Michael Bay and I just did Pain & Gain and we had such a good time making it. He came to me and said, 'I'm kind of doing a whole different reboot on Transformers. Are you interested?' I said, 'Yeah, I'll do it!' I loved the idea and I think we can make something really cool and kick-a**.

"This is not something where it's already established and I'm just in there to get a pay cheque. I'm thinking this is the most important role of my career and I can do something really special."

Transformers 4 is set for release in 2014.