Nearly five months after Brittany Murphy's untimely passing, her husband Simon Monjack, 39, was found dead last night.

Simon's death may have been an accidental overdose of prescription drugs.

One well-placed source says, "There were a number of pill bottles on the nightstand in the bedroom, and some were empty."  Many of the drugs on Simon's nightstand were the same as the ones found after Brittany died.

One law enforcement source says the two causes of death that seem most plausible at the moment are "natural" and "accidental drug overdose."

Brittany's poor mother found Simon's body last night. She also found her daughter Brittany unconscious on the bathroom floor five months earlier.