The Amanda Bynes saga took another bizarre turn late Thursday night, when the troubled actress was arrested in her NYC apartment -- after throwing a bong out the window of her apartment on the 36th floor.

TMZ reports a neighbor of the 27-year-old Bynes called the cops about a "disorderly person," and when the officers arrived, she was "behaving erratically" and "talking to herself." During the arrest, she supposedly kicked and screamed and pulled a Reese Witherspoon, yelling, "Don't you know who I am?"

And at some point during all this, she tossed a bong out the window of her high-rise apartment in an alleged attempt to hide proof of her well-known (but oft-denied) ganja activity.

Law enforcement sources tell TMZ Bynes was booked for criminal possession of the Mary Jane, plus reckless endangerment (since the airborne bong could've injured someone) and felony evidence tampering.

According to the local NBC affiliate: "She was taken to Roosevelt Hospital to undergo a psychiatric evaluation, then to a Midtown police station to be processed ... She was expected to spend the night in Manhattan central booking and appear in court Friday."

As you may recall, Amanda is already on probation for a traffic violation in California. Pretty sure this is gonna violate the terms laid out there.

We'll keep you updated as more details come in.