Los Angeles ( CNN ) -- Sylvester Stallone appealed Monday for an end to `` speculation and questionable reporting '' about his son 's death , while police and the coroner investigate what killed Sage Stallone last week . Sage Stallone , 36 , was found dead in his Los Angeles home Friday by his housekeeper , who was asked by Stallone 's mother to check on him after his lawyer and friend , George Braunstein , was unable to reach him , Braunstein told HLN 's Jane Velez-Mitchell on Monday . Sylvester Stallone , in a statement to CNN Monday , referred to celebrity news websites ' speculation about his son using drugs . `` This is in reference to the speculation and questionable reporting surrounding the death of my son Sage , '' Stallone said . `` Because when a parent loses a child there is no greater pain . Therefore I am imploring people to respect my wonderfully talented son 's memory and feel compassion for his loving mother Sasha , because 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 . '' The Los Angeles County Coroner 's Office , which completed the autopsy Sunday , declined to release any preliminary findings at the request of the Los Angeles Police Department , which is conducting its own investigation , a coroner 's spokesman said Monday . It could take six weeks for toxicology tests , which would show if drug use was involved , to be completed by the coroner 's lab , the spokesman said . While the coroner is in charge of the death investigation , detectives from the LAPD Robbery-Homicide Division also routinely get involved in high-profile deaths , a police spokesman said . Sage Stallone was not known for going out to clubs and partying , Braunstein said . His vices were candy bars and soda , he said . Sudden celebrity deaths often draw early speculation about drug involvement in Hollywood , but in several recent cases the cause of death proved to be natural . Although the investigation into actor Corey Haim 's death two years ago began as a `` suspected prescription medication overdose , '' toxicology tests `` revealed no significant contributing factors '' from drugs , the coroner later concluded . Pneumonia , not drug abuse , killed Haim . Similar speculation about drug use followed the December 2009 death of actress Brittany Murphy . The coroner eventually ruled that Murphy died from a combination of pneumonia , an iron deficiency and multiple drug intoxication . The drugs involved are legal and are used to treat respiratory infections , according to the autopsy report . Coroner : What killed Sage Stallone is still unknown . HLN 's Selin Darkalstanian contributed to this report .
`` I am humbly begging for all to have my son 's memory and soul left in peace , '' Stallone says . The Los Angeles coroner and police are quiet about Sage Stallone 's death . A housekeeper found him dead after a friend could not reach him , his lawyer says . Despite speculation about drugs , pneumonia killed several other celebrities .