Washington, Mar 30 : Rihanna, who was allegedly attacked by Chris Brown and left with horrific injuries, is reportedly not ready to co-operate with the investigators probing the case.

According to sources, the 'Umbrella' hitmaker "wants the whole thing" to go away, and that is why she is not helping the district attorney prepare his case against Brown for allegedly attacking her.

Rihanna is said to be annoyed with the fact that the picture featuring her battered face was leaked, and that she was portrayed as Brown's victim.

It is also said that Rihanna's loyalty to Brown may backfire because her fans see her as a role model, and expect her to testify against her alleged attacker, reports Fox News.

Moreover, even without Rihanna's testimony, the prosecutors already have evidence and a statement, which is said to be adequate to prove Brown guilty.

Meanwhile, Brown has been charged with two felony counts, and released on a bail of 50,000 dollars until a hearing on April 6. (ANI)