Lohan's dad blasts Ronson again

Lindsay Lohan's father has launched another public attack on the star's girlfriend Samantha Ronson.

Michael Lohan confirmed that he will remain concerned about his daughter's wellbeing while she maintains her relationship with the DJ.

"A person can be a drug and Sam is a drug. She's very controlling and manipulative and it's not a healthy relationship for Lindsay," Michael explained.

"It's not about Sam giving Lindsay drugs or alcohol or anything - there are prescription drugs from doctors that have a serious effect on a person. And I would like to put that out there. These things can mess with a person's mind. I would sacrifice my own life to get Sam out of Lindsay's."

He added that he would like his daughter to be more careful about who she associates with following her stints in rehab last year.

"I told Lindsay after she left the Cirque Lodge clinic that she needed to surround herself with good people when she got out and Sam is definitely not that good person," Michael said. "Lindsay is fragile and Sam takes advantage of her and the relationship is too intense and too dramatic."

Last week, Lindsay insisted that the public should ignore her father's outbursts, describing him as "out of control".