Lindsay Lohan's dad Michael continues to air his daughter's dirty laundry in public in a bid to save her from herself and her undesirable pals (or so he claims.)

Following on from his previous allegations about his daughter's alleged prescription drug use and his plans for an intervention, the convicted fraudster says he knows the identity of her dealer.

He tells Radar Online: “This guy follows Lindsay all over the place. All over.

“Lindsay pays for him to go everywhere. He has no job. No job. He does nothing. All he does is supply everyone in LA.”

Unconfirmed US reports claims the actress is regularly using a cocktail of drugs, including Adderall, which is normally used to treat ADD.

Michael vows to return to Los Angeles to continue his 'Save Lindsay' crusade after he's finished promoting celebrity boxing on the East Coast.

Meanwhile, Lindsay has been pouring her heart out about her enforced separation from on-again, off-again girlfriend Samantha Ronson on Twitter.

She told followers: "@samantharonson doesn't respond 2me b/c her family will cut her off if she contacts me...They control the one I love & im incapable of making any sort of difference. I'm in love with her, as she is in love with me...but her loved ones-hate her brilliance & resent her happiness"

Lindsay through the years