Lohan dad: 'Lindsay's on death's doorstep'

Lindsay Lohan's alleged drug habit has left her on "death's doorstep", according to her estranged father.

Michael has publicly pleaded with the actress to seek professional help for her reported addiction to prescription drugs.

In an open letter published in In Touch magazine, he wrote: "I have held your vacant body in my arms, felt the tears fall down your face, and I tried every way to make you see what is happening to you. I have helped so many others 'successfully'. Linds, please, honey, let me help you. Let me help you get your life back so that you can build it to where you once were."

The Mean Girls star and her mother Dina have repeatedly dismissed Michael's claims and Lindsay recently pledged to file a restraining order against him.

However, he added to the New York Daily News: "Dina is saying that I'm lying - that Lindsay doesn't have a problem and that she's okay. But I have proof that Dina has told me Lindsay is on death's doorstep, that she doesn't have much time left.

"There have been frantic calls. And I'm going to prove that Dina is the liar, not me."