The cause of death for Sage Stallone won't be known for another two months, a Los Angeles County Coroner rep told CNN.
Sylvester Stallone's son found dead at 36
An autopsy was performed on Sylvester Stallone's eldest son on Sunday, but toxicology reports will take another six weeks.
Stallone, 36, was found dead in his Los Angeles apartment on Friday. Authorities said there was no suicide note found or signs of foul play.
Stallone starred alongside his father in Rocky V and Daylight and later became a director and producer.