Doink the Clown died of a drug overdose

Just last month, Matt Osborne, better known as the original Doink the Clown during his days working for the World Wrestling Federation, was found dead by his girlfriend. The circumstances surrounding his death were suspicious enough that, mostly as a precaution, an investigation was launched.

It has since been learned, and passed along by TMZ, that Osborne died of a drug overdose.

From the report:

Ex-WWE star Doink the Clown died from a toxic overdose of morphine and hydrocodone ... this according to officials in Collin County, Texas.

TMZ has obtained the autopsy report for Matthew Wade Osborne -- whose body was discovered at his girlfriend's home on June 28.

According to the report, the medical examiner discovered "high levels of the opiates morphine and hydrocodone" in Osborne's system at the time of his death.

The report also states Osborne suffered from heart disease and that it was a "significant and contributory factor in his death."