Will source of Whitney Houston’s cocaine be revealed?

US singer Whitney Houston poses for the photographer after reveiving the Best Rythm and Blues performer award during the 1999 MTV Europe Music Awards, at the Point in Dublin 11 November 1999. (ELECTRONIC IMAGE) (Photo credit should read JOEL SAGET/AFP/Getty Images) JOEL SAGET / AFP/Getty Images

After last week's report that singer Whitney Houston used cocaine shortly before her Feb. 11 death, many fans are wondering about how the drugs were acquired and whether signs of the drug was hidden from police and other first responders.

"(Houston's case) is still an open investigation for us," Beverly Hills Police Lt. Mark Rosen told People Magazine when asked if cocaine was found in the singer's room at the Beverly Hilton Hotel in Beverly Hills, Calif. "I can’t disclose any details about the investigation."

Police previously had confirmed that prescription medication bottles were found in Houston's room, but illegal drugs were never mentioned.

The L.A. Times reports that the Los Angeles coroner's office has listed the singer's cause of death as an accident, and plans to close their report once the full autopsy report has been released in two weeks.

Now singer Ray J, who reportedly dated Houston, denied a televised claim made by the singer's former sister-in-law, Bobby Brown's sister Leolah Brown, saying that he provided Houston with drugs.

Brown told Dr. Drew Pinsky on "Dr. Drew"on Friday that she saw Ray J leaving Houston's hotel room in a hurry on the night of the singer's death. She also referred to him as a "runner boy," meaning he bought cocain and supplied it to Houston.

Ray J was quick to deny the charges, and Pinsky's show seems to want to distance itself from Brown's remarks.

Ray J's statement read, in part, "Even though Leolah Brown was nowhere near the Beverly Hilton Hotel on the day Whitney Houston died, CNN proceeded to broadcast an interview with Ms. Brown in which she falsely claimed that Ray J was at the hotel and contributed to Whitney Houston's death."

In a statement on, Pinsky reiterated that he had "immediately noted that we could not verify the accuracy of (Brown's) claims" and said that the interview had not re-aired.

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