Amy Winehouse Autopsy Underway

The autopsy on Amy Winehouse has just begun ... TMZ has learned. 

Amy Winehouse Cause of Death
So far, police have said her death was "not suspicious" and that there were no signs of foul play. 

UPDATE: The autopsy is now complete. According to police, no cause of death was established ... toxicology test results are still pending and will take 2 to 4 weeks.