The actor was known for his appearances in Thor and Terminator.
He recently made headlines after he was accused of 'choking' Paris Jackson at a games party last year.
According to TMZ Isaac was the focus of a police investigation after threatening two celebrities.
Prior to his passing, the 42-year-old took to Instagram with some troubling posts.
Deleting his prior social media history, Issac shared the following message:
"Beware the man that has nothing to lose, for he has nothing to protect," he captioned his note.
"Over the course of the last week, through introspection that should have happened many years ago, I have come to some stark revelations about my character. It is a testament to my utter ignorance that these revelations had not come sooner. 'You see, I believed myself to be a good guy. I have not been a good guy. In fact, I have been a pretty bad guy throughout my life."
"I hope that the people of the world can utilize my folly in a positive light. That you all may use my mistakes as an example for personal growth. The lesson has come too late for me, but perhaps it can inspire you," he said.
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