An autopsy of Hollywood superstar Sylvester Stallones son -- Sage Stallone -- who died mysteriously last Friday, failed to establish the actual reason of his death. The autopsy of the actor was completed yesterday and according to the spokesman for the Los Angeles County Coroner, it can take six weeks for toxicology tests to be completed. While Assistant Chief Coroner Ed Winter has confirmed that prescription bottles were found beside Sages body, his attorney and friend George Braunstein claimed that the actor didn't even drink or take drugs. Braunstein said, "I never knew him to drink alcohol. I never saw him take drugs. I never knew of anything like that at all. He didn't have a history of drug or alcohol abuse. We all think it was some sort of tragic accident." It is rumoured that Sage had died three or four days before his body was found. The actor was to tie the nuptial knot next weekend in Las Vegas, according to reports. Braunstein added: "He was very creative, energetic and very full of life. We were just joking about how he was going to get married and have a fun marriage. There was nothing dark or depressing, no problems and certainly no financial problems." Sylvester Stallone and his first wife and mother of Sage, Sasha Czack, have been left "devastated" by the actors death. In a statement, the Rocky actors representative said, "Sylvester Stallone is devastated and grief-stricken over the sudden loss of his son Sage Stallone. His compassion and thoughts are with Sage's mother, Sasha. Sage was a very talented and wonderful young man. His loss will be felt forever."