The L.A. County Coroner’s office released the report on Whitney Houston‘s cause of death. It is accidental drowning!

TMZ reports:

The L.A. County Coroner has just released the singer’s official cause of death — accidental drowning … but the report also notes heart disease and cocaine use were contributing factors to Whitney’s demise.

Officials say Houston also had traces of marijuana in her system … as well as Xanax (anxiety medication), Flexeril (muscle relaxer) and Benadryl (allergy medication).

A source connected to the investigation tells us it is “very possible” Whitney had a heart attack that caused her to lose consciousness and drown. The heart attack may have been triggered by hardening of the arteries as a result of cocaine use.

Whitney Houston was found dead on February 11 by her bodyguard at the Beverly Hilton Hotel in Los Angeles.