Another domino has fallen in the Matthew Perry case, as Jasveen Sangha, better known as the "Ketamine Queen," has pleaded guilty for her role in the actor's death, RadarOnline.com can reveal.

According to the feds, Sangha, agreed to a plea deal on five criminal charges; she will plead guilty to three counts of ketamine distribution, one count of distributing ketamine resulting in death, and one count of maintaining a drug-involved premises. Article continues below advertisement

In exchange for her guilty plea, all the other charges for which Sangha had been indicted will be dropped.

Despite the plea deal, the drug dealer could be sentenced to up to 65 years behind bars, however, prosecutors are expected to recommend a lighter sentence.

According to investigators, Sangha, 42, despe

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