LOS ANGELES - Whitney Houston, who ruled as pop music's queen until her majestic voice was ravaged by drug use and her regal image was ruined by erratic behavior and a tumultuous marriage to singer Bobby Brown, died Saturday. She was 48.

Beverly Hills police Lt. Mark Rosen told reporters outside the Beverly Hilton that Houston was pronounced dead at 3:55 p.m. in her room on the fourth floor of the hotel. Her body remained there and Beverly Hills detectives were investigating.

"There were no obvious signs of any criminal intent," Rosen said.

Houston's publicist, Kristen Foster, said the cause of death was unknown.

Rosen said police received a 911 call from hotel security about Houston at 3:43 p.m. Saturday. Paramedics who were already at the hotel because of a Grammy party unsuccessfully tried to resuscitate the singer, he said.

Houston's end came on the eve of music's biggest night - the Grammy Awards. It's a showcase where she once reigned, and her death was sure to cast a heavy pall on Sunday's ceremony.

Her longtime mentor Clive Davis was to hold his annual concert and dinner Saturday at the same hotel where her body was found, and a representative of the show said it would proceed.

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