Los Angeles , California ( CNN ) -- The widower of actress Brittany Murphy , found dead in his home Sunday night , was scheduled to undergo heart bypass surgery this summer , a spokesman for the actress ' mother said . British screenwriter Simon Monjack , 39 , was pronounced dead after the Los Angeles Fire Department was called to his Hollywood home for a medical emergency , police said . There were no signs of foul play or criminal activity in the death , Los Angeles Police Sgt . Alex Ortiz said . Roger Neal , a spokesman for Murphy 's mother , Sharon , said Monjack delayed the heart surgery until after a fundraising gala for the Brittany Murphy Foundation in September . Murphy , his wife of less than three years , died just five months ago . Sharon Murphy found Monjack unconscious in his bedroom and called the fire department , a family friend said . An autopsy is scheduled to be conducted Tuesday , according to the Los Angeles County coroner 's spokeswoman . Sharon Murphy , who shared the house with Monjack , `` loved him like a son '' and is devastated by his death , Neal said . It is the same Hollywood Hills home where Brittany Murphy lived . Murphy , 32 , died in December from a combination of pneumonia , an iron deficiency and multiple drug intoxication , a coroner said . The drugs involved were legal and used to treat a respiratory infection , according to an autopsy . The often bubbly , free-spirited actress appeared in films such as `` Clueless , '' `` 8 Mile , '' `` Do n't Say a Word '' and `` Girl , Interrupted . '' She also lent her voice to animated works , including the movie `` Happy Feet '' -- in which she also sang -- and a regular role on the animated TV series `` King of the Hill . '' Monjack and Murphy were married in May 2007 . The couple had no children . The foundation 's gala , which still may be held , was organized to raise money for children to study music , dance and other arts , Neal said .
NEW : Simon has postponed heart surgery , spokesman said . NEW : Autopsy scheduled for Tuesday . Police say no evidence of foul play in death of British screenwriter . His wife , actress Brittany Murphy , 24 , died in hospital .