Whitney Houston's death was caused by accidental drowning, triggered by cocaine use and heart disease, according to the official coroner report.

The drug test performed by the coroner's office had revealed that the US singer was a chronic cocaine user. The report labels the death "accident", without evidence of "trauma or foul play".

The announcement ends weeks of speculation over the cause of Houston's death, BBC writes Friday.

On February 11, on the eve of the Grammy Awards, the 48-year-old Houston - one of music's all-time biggest stars - was found dead, submerged in a bath tub, in a Beverly Hills hotel in California.

Other drugs found in her blood included marijuana, as well as an anti-anxiety drug, a muscle relaxant and an allergy medication, but, according to the coroner, these were not factors in her death.

Houston's death at the age of 48 marked the final chapter for the superstar whose fall from grace while shocking was years in the making. Houston had her first No. 1 hit by the time she was 22, followed by a flurry of No. 1 songs and multi-platinum records.

Over her career, she sold more than 50 million records in the United States alone. Her voice, an ideal blend of power, grace and beauty, made classics out of songs like "Saving All My Love For You," ''I Will Always Love You," ''The Greatest Love of All" and "I'm Every Woman." Her six Grammys were only a fraction of her many awards.

But amid the fame, a turbulent marriage to Bobby Brown and her addiction to drugs tarnished her image. She became a woman falling apart in front of the world.

Her last album, "I Look To You," debuted on the top of the charts when it was released in 2009 with strong sales, but didn't have the staying power of her previous records. A tour the next year was doomed by cancellations because of illness and sub-par performances.

Still, a comeback was ahead: She was to star in the remake of the movie "Sparkle" and was working on new music.

The pop star was laid to rest at a cemetery in her home state of New Jersey after a funeral that was attended by celebrities including Oprah Winfrey, Alicia Keys, Mariah Carey and Mary J Blige.

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