An autopsy says an Orlando woman died from injuries to her neck and head that were caused by a car collision and an exploding air bag.

Associate Medical Examiner Joshu Stephany said in a report released Tuesday that 51-year-old Hien Tran's death last month was an accident.

When her air bag deployed, it exploded, sending metal shrapnel flying. The medical examiner says that metal sliced into the 51-year-old's neck, killing her.

Just weeks after Tran's death, the U.S. government issued an urgent plea to more than 4.7 million people to get the air bags in their cars fixed, amid concern that a defect in the devices can possibly kill or injure the driver or passengers.

The air bag in Tran's 2001 Honda Accord was recalled back in 2008.  It's the same type of defective air bag that is now being recalled in millions of vehicles.

Monday, we reported that Tran's family is suing Honda and Takata, the manufacturer of the defective air bags.

The Florida Highway Patrol still hasn't ruled on a cause of death in Tran's case.