comment: >
  
  I wonder what caused the grenade to suddenly explode.
  Let's see what the article has to say about that:
  
  On January 12 at around 3 PM, he pulled the safety pin of the hand grenade and it exploded twice in his right hand.
  
  That sounds about right.  Though I do wonder what it means for it to explode twice.  Maybe the article is counting the ignition as an "explosion?"
context: We started a go-fund me to get him another grenade for his keys. >
  
  Probably have to get a new key ring too. He lost the other one. He can't quite put his finger on where they are. >
  
  Sounds like maybe it was a dud or only partially made-safe. Maybe just a primary charge. >
  
  hate it when my key grenade prematurely detonates