Sylvester Stallone's rep, Michelle Bega, tells TMZ, "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."
Sage Stallone -- Sylvester Stallone's son -- has died and sources tell us the cause was an overdose of pills.
He was 36 years old.
Law enforcement sources tell say Sage's death does NOT appear to be a suicide. We're told there was NO suicide note found at the scene.
Sources tell us officials DID find "numerous empty pill bottles" in the area where Sage's body was discovered. No word on what types of medication the pill bottles were for.
An autopsy is scheduled for some time in the next 48 hours.
The details surrounding the death are still unclear .. but we're told he was found in his L.A. home by either a maid or his girlfriend. Paramedics were called to the home and pronounced him dead at the scene.