A coroner has ruled that Whitney Houston's death was caused by accidental drowning, but drug abuse and heart disease were also factors.
The Coroner's spokesman 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.
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".
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.
The singer, who was one of the world's best selling artists from the mid-1980s to late 1990s, had a long battle with drug addiction.