Houston drowned after cocaine use, coroner says.

Whitney Houston's death was caused by accidental drowning, but drug abuse and heart disease were also factors, a coroner has ruled, according to BBC.

Coroner's spokesman Craig Harvey said drug tests indicated the 48-year-old US singer was a chronic cocaine user.

The announcement ends weeks of speculation over the cause of Houston's death.

She was found submerged in the bath of her Los Angeles hotel room on the eve of the Grammy Awards on 11 February.

In a statement, the LA County Coroner's office described Houston's manner of death as an "accident," adding that "no trauma or foul play is suspected."

The cause was cited as drowning and "effects of atherosclerotic heart disease and cocaine use."

Other drugs found in her blood included marijuana, as well as an anti-anxiety drug, a muscle relaxant and an allergy medication.

But these were not factors in her death, the coroner's statement said.