Sylvester Stallone's Son Sage Found Dead
07/13/2012 AT 08:20 PM EDT
"Sylvester Stallone is devastated and grief-stricken over the sudden loss of his son Sage Stallone," says a rep for the actor.
"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."
Police officers were called to the house at 2:17 p.m. and discovered the body. There were no signs of foul play or forced entry.
"It sounds like a terrible tragedy. He was way too young to die," LAPD Commander Andrew Smith tells PEOPLE.
He adds that reports that Sage died from a prescription overdose are premature.
"It could have been a heart attack or a stroke," he says, adding the coroner's office will likely spend several weeks on a toxicology report before it can reach any such conclusion.
Sage's attorney George Braunstein tells PEOPLE that Sage's housekeeper initially found him dead.
"(Sage) was full of life, a wonderful, loving person," says Braunstein. "The last time I talked to him a few days ago he was saying he was getting married, he had a lot of things he was working on and seemed very enthusiastic. There was no indication there was any problem."
Sage, who Sylvester, 66, had with ex-wife Sasha Czack, was best known for appearing alongside his father in Rocky V, playing son Robert Balboa. He also appeared with his dad in 1996's Daylight.
The New York Post and TMZ first reported Sage's death.