Sylvester Stallone has called in a private investigator to figure out how his son Sage died and what lead up to the tragedy ... TMZ has learned.
We've learned famed P.I. Scott Ross -- who was the lead investigator in the Michael Jackson molestation case and the Chris Brown/Rihanna battery case -- met Tuesday at Stallone's home with Sly, his brother Frank, and an official from the L.A. County Coroner's Office. Sources tell us they discussed Sage Stallone's death and the status of the investigation.
Sage Stallone had major dental surgery two weeks before he was found dead at home, according to his mother, who said she warned her son against having five teeth pulled on the same day. “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],” Sasha Czack told the New York Post on Monday.