New York, Feb 15: Lindsay Lohan''s mum Dina has rubbished reports about her tax problems as `ridiculous' - accusing her ex-husband of leaking the story to the press.

The `Mean Girls' star''s mum is said to owe 11,485.74 dollars in property taxes to Nassau County.

If she fails to pay the bill, the tax lien - a security interest granted on property to secure debt repayment - reportedly placed against her home will go up for auction next week.

Lohan has refused to confirm the news, but has blasted the reports as `ridiculous'.

And she claims her former partner, Michael Lohan, may have given the story to the media.

"My ex is in arrears for child support, and I think it has come from that area. Somebody out there is trying to do something to sabotage me and my family," the New York Post quoted her, as saying.

Michael Lohan couldn''t be reached for comment. (ANI)