Whitney Houston has died at age 48, her publicist confirmed to OnTheRedCarpet.com's parent company ABC on Saturday, February 11.
Beverly Hills police Lt. Mark Rosen said the singer died in her room at the Beverly Hilton hotel.
Rosen said they received a 911 call from hotel security at 3:43 p.m. Efforts to revive her were unsuccessful and she was pronounced dead at 3:55 p.m.
The cause of death has not yet been determined.
"No obvious signs of foul play and no obvious signs of a cause of death," Rosen said.
Houston was scheduled to perform Saturday at a pre-Grammy gala for producer Clive Davis.
"Six-time Grammy-winner Whitney Houston was one of the world's greatest pop singers of all time who leaves behind a robust musical soundtrack spanning the past three decades," The Recording Academy said in a statement obtained by OnTheRedCarpet.com. "Her powerful voice graced many memorable and award-winning songs. A light has been dimmed in our music community today, and we extend our deepest condolences to her family, friends, fans and all who have been touched by her beautiful voice."
Houston is set to appear in an upcoming film called "Sparkle," which is slated to hit theaters on August 10, 2012. In the film, she portrays the mother of a singer played by Jordin Sparks. According to the film's IMDB page, the story follows three sisters who "form a successful singing group and must deal with the fallout of fame and drugs."
Houston won six Grammy Awards, 30 Billboard Music Awards, 22 American Music Awards and two Emmy Awards during her long career. She was one of the world's best-selling musicians, having sold over 170 million albums and singles worldwide.
Towards the end of her career, Houston became as well-known for her drug use, erratic behavior and tumultuous marriage to singer Bobby Brown.
The singer, who has struggled with drug and alcohol abuse for years, relapsed and returned to rehab in May.
"Whitney Houston is currently in an out-patient rehab program for drug and alcohol treatment," the pop and R&B singer's spokesperson told People magazine at the time. "Whitney voluntarily entered the program to support her long-standing recovery process."
Houston, known for her songs in her 1992 film "The Bodyguard," including her cover of Dolly Parton's "I Will Always Love You," underwent treatment for substance abuse in 2004 and in 2005.
In her infamous 2002 interview with ABC News' Diane Sawyer, Houston said, "The biggest devil is me. I'm either my best friend or my worst enemy."
She also denied using crack cocaine, telling Sawyer, "Crack is cheap. We don't do crack. Crack is whack."
She told Sawyer that she has used alcohol, marijuana, cocaine and prescription drugs at different points during her career.
"I partied a lot," she said. " Trust me, I partied my tail off. You get to a point where you know the party's over."
In 2000, the singer was detained at a Hawaii airport after a security guard said some 15 grams of marijuana were found in her purse. The drug possession charge was later dismissed.
Houston leaves behind one child, Bobbi Kristina who was born in 1993 during her marriage to Bobby Brown. Houston married Brown in 1992 and filed a domestic abuse charge against him the following year. The pair got divorced in 2007.
UPDATE Chilling new details have been released about Whitney Houston's death. Meanwhile, producers for the Grammy Awards are planning a tribute to the singer for Sunday's 2012 ceremony. Click here for the update.