LOS ANGELES, CA - FEBRUARY 12:  Flower tributes are left at the Beverly Hilton Hotel in the early hours of February 12, 2012
Toby Canham

Pronounced dead at 48 in the Beverly Hilton Hotel Saturday afternoon, the exact cause of Whitney Houston’s death remains unclear. As of Sunday afternoon, just a few details of the circumstances surrounding her untimely death have been officially confirmed.

Houston’s bodyguard found her unresponsive in her fourth floor hotel room: he alerted hotel security who immediately contacted the police.

Paramedics attempted CPR on Houston for 20 minutes but to no avail. She was pronounced dead at 3:55pm. Although the coroners are unable to reveal what they saw in her room, they did confirm to CBS that her autopsy will begin today.

"At this time, there's no obvious evidence of foul play or cause of death,” Beverly Hills Police Lieutenant Mark Rosen told People. “We don’t know yet,” is all police had to say about the question of drugs in her room.

Given Houston’s self-professed troubles with drugs over the years, rumors are blanketing the Internet, but this is all that has been confirmed by officials so far. FUSE is working to confirm as many additional details as possible, keep checking back for latest updates.

Photos Timeline of Whitney's Stardom

Listen to all 40 Whitney Houston singles on our Spotify Tribute Playlist.

Watch Whitney's Best Musical Performances.

Read Whitney Houston's No. 1 Songs: A Primer.

Read Celebrities React to Whitney Houston's Death on Twitter.

Share Your Whitney Memories with Fuse's Esteban Serrano.