UPDATE -- Bynes took to her Twitter page Sunday night to deny the story, writing, "I cant help but laugh at all of you writing fake stories about me. I was not in any hit and runs. I don’t drink so the DUI is false."
Amanda Bynes slammed into a car on the 101 Freeway in the San Fernando Valley on April 10 ... then fled the scene -- according to the victim who told cops the troubled actress was the culprit.
The culprit was driving a 5 series BMW at the time of the accident. The victim gave chase, got off the freeway, but the culprit blew a red light, never to be seen again. The victim was able to write down the license plate number. She only got a profile view of the woman driving the BMW.
CHP showed up, ran the plate and determined it was a rental vehicle. Officers told the victim the culprit was driving an Enterprise rental car. The victim then contacted Enterprise, who told her the person who had rented the car was Amanda Bynes.
The victim then showed up at a CHP substation and ID'd Amanda from a photo lineup. And get this ... the photo of Amanda was taken just 4 days earlier -- it was her mug shot from a DUI arrest. Amanda was driving in West Hollywood on April 6 when she clipped a cop car and was immediately popped for DUI.
Law enforcement sources tell TMZ ... the case was referred to a filing officer at the L.A. City Attorney's Office who immediately rejected it because there was no independent witness fingering Amanda as the phantom driver.
Amanda was accused earlier this month of hitting a car in Hollywood and then fleeing the scene. She told cops she did not feel the impact and was not ticketed.