A small quantity of white powder recovered at the Beverly Hilton hotel room in L.A. where singer Whitney Houston died has been identified as cocaine, sources tell TMZ. Cocaine and heart disease were contributing factors in her Feb. 11 accidental drowning death.

Meanwhile, mom, Cissy Houston, 78, says in her first interview since the tragedy that she wishes things were different. "There's nothing I can do about it," she told MY9 TV (WWOR), a Fox affiliate in Secaucus, N.J.. "There's nothing nobody else can do about it. If I thought I could do something to bring her back, that's exactly what I'd do, but I know that's impossible."

This article contains information from Inquirer wire services and websites. Contact "SideShow" at sideshow@phillynews.com.