Side/rear Glass problems of the 2014 Honda Accord

It was a cold day with wind chilled down to single digits. I took something out from the trunk, got into my car and closed the door. Then I notice that the rear passenger side window glass has been broken into tiny pieces. The whole glass was gone, with half landed inside the car and half outside. The car was parked at the time and there was no one around and nothing that I know of had hit the car door window. The glass just spontaneously shattered.