Whitney Houston's death case closed

Beverly Hills - Police have closed their investigation into Whitney Houston's death without finding evidence to suggest it was anything other than an accidental drowning, investigators announced on Wednesday.

The Beverly Hills Police Department did not release a detailed report on the case, but Lt Mark Rosen said the conclusion came after detectives reviewed the complete findings of the coroner's office.

'Not criminal'

"Based on the findings of our investigation and our review of the coroner's report, we have determined that this is not a criminal matter," the Beverly Hills police department said in a statement.

"The BHPD investigation has been officially closed."

Coroner's officials ruled Houston drowned accidentally at the Beverly Hilton on February 11 and that heart disease and cocaine use contributed to her death.

Houston's death on the eve of the Grammy Awards stunned the world. The singer had been attempting a comeback and had finished work on a remake of the film Sparkle.

Toxicology results showed cocaine in her body, and coroner's officials said the results indicated chronic use.

In the bathroom, investigators found a small spoon described by investigators as having a "crystal-like substance" in it, and they discovered a white powdery substance in a drawer, a coroner's report released last week showed.

Houston had a history of drug abuse which marred her career, robbing her of her voice and reputation, but family and friends described her as intent on returning to glory in the months before her death.

Her death at age 48 sparked a renewed interest in her music and movies, sales of which will benefit her only daughter, Bobbi Kristina.