Simon Monjack – who was left devastated when his actress wife died last December aged just 32 – was discovered unconscious by Brittany’s mother Sharon at his Los Angeles home last night at around 9.30pm.
She immediately dialled 911 but Simon, 39, was pronounced dead by paramedics after attempts to resuscitate him were unsuccessful.
It is believed he suffered a heart attack and his passing is being treated by Los Angeles police as unexplained.
A death investigation is now underway, according to website TMZ.
Following Brittany’s death on December 20, the British screenwriter – who was left out of her will – had spoken out about their life together saying they were planning to start a family.
He said: “She knew her career wasn’t in the best place. She was ready to kind of be a mother and that was what a lot of the talk was about.
“We were discussing children the night before she passed. We were discussing baby names. A boy would have been Oliver and a girl would have been Sophie. That was the plan, to move to New York and to start a family.”
He also revealed how he felt “vindicated” by her autopsy report after the enquiry into her death showed she had no history of drug abuse.
He said: “Although Brittany’s autopsy report was incredibly shocking and sad to the family – her mother Sharon Murphy and I both shed tears – we are vindicated in that we always said Brittany never did any kind of illegal substances and that the medication she was taking was the medication found in her system. We hope now that people will understand the legacy of Brittany Murphy and the incredible body of work of Brittany Murphy.
“I am so sad that we are living in a culture of rumor and I just wish that people would understand that sometimes out of every tragedy can come some good.”