Former child star Amanda Bynes said Monday that she plans to sue the New York Police Department for her arrest Thursday, and said that Sunday's tweets disparaging pop-star Rihanna were not from her.

"I'm suing NYPD for illegally entering my apartment, lying about drugs on me and lying about me tampering with nonexistent drug paraphernalia," Bynes, 27, tweeted Monday, "then I'm suing for being put into a mental hospital against my will, then locked up overnight for coming home after a facial and working out with my trainer like the good girl that I am."

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Saying she's "allergic to alcohol and drugs," Bynes -- charged with unlawful possession of marijuana plus reckless endangerment and attempted tampering with physical evidence for allegedly throwing a bong out the window of her West 47th Street apartment -- wrote that Manhattan Criminal Court Judge Neil Ross "saw that there was no drugs on me or proof of any type of bong or mental illness." She was released on her own recognizance.

She said in a second tweet, "Thankfully I'm an educated multi-millionaire who knows better than to speak to perverted unjust cops without my lawyer."

An NYPD spokesman did not return Newsday's request for comment.

Bynes, in her second tweet, additionally stated: "I saw a bunch of mocked up tweets about me bashing Rihanna in my mentions. I'm followed by so many people that someone is always mocking up fake tweets so I feel the need to address them! Rihanna and I met and I'm sure we'll be in a music video together one day!"