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So we've already told you about the screaming, the injuries and what other celebs have had to say about the disturbing Chris Brown/Rihanna story, and now here's the explanation behind those criminal threats charges. According to E! Online, Rihanna has reportedly told police that Chris "choked her while threatening to kill her and [she] subsequently lost consciousness."

Apparently the couple began fighting after they left Clive Davis' pre-Grammy party on Saturday night, and just after midnight, things went from nasty to ugly in Chris' rented silver Lamborghini. Chris pulled his car to the side of the road in Hancock Park, and Rihanna allegedly grabbed the car keys and tossed them out the window, which caused Chris to flip out.

Chris went outside and searched for the keys, came back to the car, put his hands around Rihanna's neck and, according to the E! Online's source, told the R&B princess, "I'm going to kill you!" Oh, that isn't even the worst part - Rihanna told police that she lost consciousness after that, and when she awoke, Chris was gone.

You know what happened next - a concerned bystander called 911, the police came and took Rihanna to the hospital - but we're still waiting to find out what the legal ramifications will be.

Additionally, The Jakarta Post reports that Rihanna has cancelled yet another concert, this one in Jakarta, Indonesia. As you know, Rihanna has already cancelled her upcoming birthday bash and another show in Malaysia.