Sylvester Stallone's ex-wife has taken legal action in a bid to become the administrator of their late son Sage's estate.

Sage Stallone, 36, was found dead at his home in the Hollywood Hills in July (12) and a Los Angeles County Coroner subsequently determined the actor/producer died of a heart attack.

Now, his mother Sasha - who was married to the movie star from 1974 to 1985 - has asked a judge to grant her full authority to make decisions on behalf of her late son's estate, according to

She claims Sage died without writing a will and left personal property valued at $40,000 (£25,000).