Lindsay Lohan's dad vows to track down her drug dealer

Lindsay Lohan's father has vowed to track down a drug dealer who has been boasting of selling cocaine to the troubled actress.

The unidentified man - who has been in touch with several media outlets - claims he will tell-all about Lohan and other celebrity clients for a price.

But now the Mean Girls starlet's father - former convict Michael Lohan - says he hopes to track him down.

He said: "I've been looking for the people who've been selling my daughter and these other kids the drugs.

"And come hell or high water, one day I'm going to find these guys and I'm going to expose them."

Recovering addict Michael Lohan, who has joined a Christian youth ministry since he was released from jail last month, added: "God is going to get even with this guy.

"He's destroyed a lot of lives."

Lindsay Lohan, 21, checked out of rehab last year.