Lindsay Lohan’s estranged father Michael Lohan, who is in a very public battle against his family to get his oldest daughter the proper help (read full details here), was allegedly victim of a hacker who sent out some very disturbing tweets via Michael’s official Twitter account (@MichaelJLohan).

The “hacker” claimed Lindsay had an affair with music mogul Tommy Motolla when she was 17 and that she was HIV positive. The pervert “hacker” tweeted, “It’s time you learned the truth. The truth about Tommy Motolla engaging in an affair with my then-17 year old daughter,” followed by “the truth about my daughter living with HIV for the rest of her life as a result of the decisions she has made.”

Michael was apparently very upset by what happened. The authorities are currently investigating this incident and Michael is planning on pressing charges for identity theft. “Someone hacked into my account,” Michael told Hollyscoop. “There’s an investigation going on now to find out who it was…I’m going to press charges as soon as I find out.”

However Lindsay believes that her own father posted those tweets in an attempt to get even more media attention, money and try to damage her reputation beyond repair. “He’s a grown man and has done the exact same things on TV/ in interviews, [so] why wouldn’t he lie on Twitter and everywhere else? He just wants money — and he’s using me, my name, my status, my mother, brothers and sister for the cash to pay for [another] wedding,“ Lindsay said.