Actress Lindsay Lohan is reportedly caught up in a battle with a computer hacker who claims to have stolen naked pictures of her.

Celebslam.com has posted what it alleges is the script of a chat with Lohan, in which she reveals a computer hacker has stolen pictures taken by on-off boyfriend Calum Best.

She is claimed to have written that the hacker "broke into my computer and left a file on my desktop saying he got the pictures Cal took from me naked."

In the chat she reveals that her lawyer has been contacted.

Her representative says of the issue, "Anything is possible. I know nothing about it."

Lohan ended a 45-day stay at Malibu, California's Promises Clinic on Friday. She checked in in May after being arrested on suspicion of driving under the influence, following a car crash in Hollywood.