Reports have suggested that distraught actor Sylvester Stallone has hired a top private investigator to help get to the bottom of how his son, Sage died at the age of 36 last week.
According to TMZ, the 'Expendables' actor has turned to renowned Scott Ross for help - he was the man who led investigations into the Chris Brown/Rihanna assault case and the Michael Jackson molestation case.
The website reports that Ross attended a meeting at Sylvester Stallone's home that was also attended by the actor's brother Frank, as well as an official from the LA County Coroner's office.
A source has told the site that they talked about the 36-year-old's sudden death as well as the current investigation that was being held by the coroner.
Stallone is keen to get to the bottom of what happened to his son, and allegedly has not discarded foul play despite the reported lack of evidence pointing in this direction.
It's claimed that Stallone wants to retrace Sage's whereabouts in his final weeks as well as his use of drugs and alcohol.
Ross did not speak to TMZ, but it is reported that he's had a long-standing working history with the Stallone family.
Earlier this week, Sage's mother (Stallone's first wife Sasha Czack) has revealed that she has previously warned her son about the danger's of having too much dental treatment - which she seems to blame for Sage's sudden death.
Talking to the New York Post, she said: "I told him not to do that. I've heard about people dying having multiple procedures done to your mouth. Do not have more than one tooth (pulled)."
An autopsy was carried out earlier this week, and the LA County Coroner is currently awaiting toxicology results.
Sylvester Stallone pictured out in Beverly Hills last month...