Joshua Perper and Charlie Tiger, the Seminole Police Chief, delivered the verdict of the Playboy model’s autopsy at a press conference in Florida on Monday .

Perper concluded that Anna Nicole died of “combined drug intoxication” after taking a concoction of the sleeping medication chloral hydrate and at least eight other prescription drugs, including methadone and Valium, used to treat depression, pain and anxiety.

Tiger said: “We are convinced that this case is the result of an accidental overdose, with no other criminal elements present.”

Anna Nicole died aged just 39 after being found unconscious in a Florida hotel room on February 8.

Perper’s initial autopsy ruled out “any kind of physical injuries, such as blunt-forced trauma, gunshot wound, stab wounds or asphyxia” as a cause of death, but added he “saw something that looked a little bit unusual” in Anna Nicole’s heart.