Amanda Bynes' recent bizarre behavior reached its apex on Monday when she allegedly set fire to a California woman's driveway and was placed under involuntary psychiatric care, according to TMZ. 

The fire department arrived at the Thousand Oaks, Calif. home around 9 p.m. on Monday after they learned of the small blaze in the driveway. The sheriff's department was subsequently alerted and found Bynes standing near the fire. The troubled star was questioned by police and was deemed mentally unstable.

She was involuntarily hospitalized for a mental evaluation, but can only be held for 72 hours against her will. The woman who owns the home where Bynes set the fire told the website she was not aware of the small blaze, until police summoned her from her house.

"Do you know anyone by the name of Amanda Bynes, or why she would have some vendetta against you?" the woman said the police asked her.

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The elderly woman revealed she did not know Bynes and was unaware of her celebrity status. The police then informed her that Bynes had started a small fire and was carrying a "little red gas tank."

See photos of the burned driveway and of Bynes just hours before she was hopitalized here.

The incident follows a string of strange behavior exhibited by the 27-year-old in recent months. Bynes has posted several messages on her Twitter page, refereeing to celebrities such as Myley Cyrus and Drake as "ugly." The troubled star even made disparaging comments about the physical attributes of Pres. Obama and the first lady.

Bynes was arrested in May for allegedly tossing a bong out the window of the 36th floor in her New York City apartment. The building's staff called the cops on her for allegedly rolling and lighting a joint in the lobby.

Tags: Amanda Bynes