Authorities reveal that cocaine was found in Whitney's room the night of her death. Plus, Cissy Houston speaks out for the first time.

THE INVESTIGATION INTO WHITNEY HOUSTON'S DEATH -- TAKES ANOTHER TURN -- AUTHORITIES NOW REVEAL COCAINE WAS FOUND IN HER ROOM.


AT THE TIME OF HER DEATH, INVESTIGATORS SAID NO ILLEGAL DRUGS WERE FOUND ON THE SCENE, BUT THAT STORY'S CHANGED.

SOURCES TELL TMZ, 'WHITE POWDERY REMNANTS' WERE FOUND IN WHITNEY'S ROOM AT THE BEVERLY HILTON HOTEL, WHICH WAS LATER CONFIRMED TO BE COCAINE.

THAT GOES AGAINST CLAIMS WE HEARD EARLIER THIS WEEK THAT A SO-CALLED CONFIDANT OF WHITNEY'S NAMED 'RAFFLES VAN EXEL,' REMOVED ALL TRACES OF THE DRUG FROM HER ROOM BEFORE AUTHORITIES ARRIVED.

BUT BEVERLY HILLS DETECTIVES ARE NOT INVESTIGATING ANY EVIDENCE TAMPERING BECAUSE, QUOTE, 'THEY'RE CONVINCED IT WASN'T REMOVED.'

MEANTIME, WHITNEY'S MOTHER CISSY HOUSTON IS SPEAKING OUT FOR THE FIRST TIME SINCE HER DAUGHTER'S DEATH.

THE SOUL SINGER TELLS NEW JERSEY'S 'MY 9'S 10 O'CLOCK NEWS,' 'I have my moments. I'm not there yet. I don't think I'm any more courageous than anyone else.'

SHE ALSO SAYS, SHE DOESN'T FEEL RESPONSIBLE FOR HER DAUGHTER'S DEMISE, AND SHE'S STILL VERY PROUD OF WHITNEY. 'She accomplish.