New York: The reason behind Sage Stallone's death has not been determined yet, say officials. Sage, 36, was found dead Friday in his Hollywood home. According to reports, he died of prescription drug overdose. However, officials said they need two months to find out the cause of death.

The autopsy, which was completed Sunday, still requires the findings of toxicology tests, said the coroner's spokesman. This normally takes six weeks, people.com quoted a spokesman for the Los Angeles County Coroner as saying.

Sage, who acted with his father in 1990's "Rocky V" and 1996's "Daylight", was reportedly set to marry his girlfriend in Las Vegas this weekend.

(Agencies)

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