Back window broke 91 Oldsmobile Cutlass Supreme

[crazyoildude]

This morning my alarm went off and i saw that the back window blew out of my 91 Olds Cutlass the car was parked way up in my driveway and i dont think anyone broke it..What does everyone think could it be the cold?? Never had this happen before and actually it was warmer today than yesterday..

 

[Chris142]

Something broke it. Rock, BB, bullet.

 

[crazyoildude]

found nothing at all my friend the glass guy said it could have broke from anything including ice... I was thinking if it was a bb i dont think that would have set off the shock sensor on the alarm and if it was a bullet i would see signs of exit or something... I was thinking maybe some animal climed up my house and fell off..We have a lot of squrrels