Mother Denies Brittany Murphy Did Drugs

Brittany Murphy's mother Sharon and husband Simon Monjack are speaking out about what they believe caused their loved one’s death.

Sharon Murphy tells People.com that she and Monjack think the late actress' death stemmed from a congenital heart murmur. They tell the site that Brittany was diagnosed with the condition in her teens and had received sufficient medical care for it since.

"We had it checked out every which way you could imagine," Monjack says.