Investigators' quieries come as the Lifetime series adds a new dimension to the sexual abuse allegations Kelly has faced for the better part of his almost 30-year career. Mason allegedly threatened to kill Joycelyn Savage father.
Neither woman lives in Chicago, but both said they were the victims of inappropriate conduct by Kelly in the city - one in a home on the South Side in the mid-1980s and the other at the R&B singer's warehouse/studio space in the 200 block of North Justine in 2002.
Surviving R Kelly has been given a United Kingdom release date of next month by Lifetime sister channel Crime & Investigation.
"I stand behind these women 1000%, believe them, know they are suffering and in pain, and feel strongly that their voices should be heard and taken seriously", she wrote in part. We're told investigators were flooded with calls once the docuseries aired.
On Tuesday, Cook County State's Attorney Kim Foxx called for any R. Kelly sexual abuse victims to come forward, saying her office can not investigate without the cooperation of victims and witnesses.
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"So what you think I felt".
Kelly's attorney is still denying all allegations on behalf of the singer.
The calls came a day after state's attorney Kim Foxx made a plea to any alleged victim of the singer to come forward.
"No one has ever seen any evidence of it", he said.
On Wednesday, Lady Gaga took to Twitter to announce that she plans to remove her 2013 song with Kelly, "Do What U Want (With My Body)", from iTunes in the wake of the docu-series.
The case was presented to a Magistrate Judge who issued a warrant in July, citing "terroristic threats and acts". If prosecutors were aware of crimes Kelly committed that were connected to the sex captured on the video, they would have brought those charges within a few months of his initial indictment.
As the dark details of Kelly's years of abuse continue to unravel, each day new pieces of information are reported.