Police release details of Rihanna's beating by Chris Brown

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The court has released a detailed account of Rihanna's beating at the hands of then-boyfriend Brown.

TMZ and other sites are reporting the horrifying details.

Among details from police, some of which have been paraphrased:

The victim said she became enraged and slammed both of her fists against the dashboard on the passenger side of the car they were in. She reported that the defendant then pulled the vehicle over and reached over her with his right hand. He opened the car door and tried to force the victim out.

The report says Brown was unable to shove Rihanna out of the car because of her fastened seat belt.

 The report says when he could not force her to exit, Brown took his right hand and shoved her head against the passenger window of the car.

Rihanna then faced the defendant and he punched her in the left eye with his right hand. He then continued driving.

As he drove, he kept punching the victim in the face with his right hand while steering the vehicle with his left hand.

Rihanna told police the assault caused her mouth to fill with blood and blood to splatter over her clothing and the inside of the car.

There's more....

Rihanna said Brown stopped and that she looked in the mirror and saw her eye beginning to swell.

Then Brown looked at her and said, "I'm going to beat the ... out of you when we get home! You wait and see!'"

Rihanna told police she tried to call her personal assistant, but she didn't pick up -- but Rihanna said she "pretended to talk, saying, 'I'm on my way home. Make sure the cops are there when I get there.' "

 Rihanna says she pulled the act "because she did not want to get beat anymore."

After her fake phone conversation, she says Brown "looked at [Rihanna] and said, "You just did the stupidest thing ever! Now I'm really going to kill you!"

Rihanna told cops that Brown kept punching, "during which time [Rihanna] interlocked her fingers behind her head and brought her elbows forward to protect her face." He punched her on her left arm, which caused a bruise on her left tricep.

At that point, Rihanna tried to text her assistant. Brown threw the phone out of the car, stopped the vehicle and Rihanna then tried opening her door to get out, but Brown sped off and the door shut with Rihanna inside.

Brown placed Rihanna in a headlock while he drove, then bit her on her left ear.

The car eventually stopped and Rihanna took the keys out of the ignition, and Brown began to punch her again in the face and arms. He placed her in a headlock and started applying pressure to her carotid artery. She couldn't breathe and started to lose consciousness. She tried to get free and Brown bit her left ring and middle fingers and then released her.

Rihanna next took off her shoe and tried breaking the passenger window, and he continued to punch her.

Eventually, Brown got out of the car. Rihanna opened the door and continued screaming. Brown began punching her again. He got back in the car and screamed "Where are my ...  keys?" He got out, looked for the keys in vain, removed some CDs and walked away.

Officers were called and observed numerous contusions and abrasions to Rihanna's face and forehead, as well as bruising on her left arm. There were other injuries as well.

The police report indicates that her facial abrasions were caused by Brown's large ring on his right hand.

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Photo: WireImage