Determining Sage Stallone's Cause of Death May Take Weeks

July 16, 2012 — -- It could take weeks to learn Sage Stallone's official cause of death.

A spokesman for the Los Angeles County Coroner said Sunday that the results of the 36-year-old actor's toxicology tests will not be known for approximately six weeks. Stallone, the son of actor Sylvester Stallone, was found dead in his Los Angeles home Friday. An autopsy on his body was completed Sunday.

Sylvester Stallone released a new statement this morning calling for an end to "the speculation and questionable reporting" about his son's passing.

"When a parent loses a child there is no greater pain," he said in a statement to TMZ. "Therefore I am imploring people to respect my talented son's memory and feel compassion for his loving mother Sasha. This agonizing loss will be felt for the rest of our lives. Sage was our first child and the center of our universe and I am humbly begging for all to have my son's memory and soul left in peace."

On Sunday, Sage Stallone's attorney said his client "never had any serious health problems" and no "history of drug or alcohol abuse."

"Sage was a really young, very sensitive, and very talented kid," attorney George Braunstein told People magazine. "There has been no indication that there was anything wrong in his life."

Sage Stallone's body was discovered by a housekeeper, who called authorities. Police said there were no signs of foul play. While there was no suicide note found at the scene, authorities said there were bottles of prescription drugs.

Although media reports surfaced over the weekend suggesting that Sage Stallone may have been dead several days before his body was found, Braunstein told People magazine that Sage updated his Facebook account about 17 hours before the housekeeper found him.

Braunstein said Sage Stallone was a creative genius.

"He had a lot of bright things on the horizon. He was talking about pictures he wanted to direct and write and ideas that he wanted to go forward with," he said.

Sage Stallone played Rocky Balboa's son in "Rocky 5" in 1990 and appeared in the film "Daylight" with his father. He also directed the 2006 short film "Vic."

"He was so private, we don't know a lot of the circumstances, even around his personal life. This was not someone anyone followed. This is someone that sadly a lot of people had forgotten about," said Ian Drew, senior editor at Us Weekly.

Sage Stallone is the eldest of Sylvester Stallone's five children with first wife Sasha Czack.