Naked in a shower? Pretty sure he’s not hiding anything, even a knife.
Could be nearby on the counter, but the owner felt good enough to waste time turning his back to him and walking all the way to his actual house to get a gun and come back.
Add that it sounds like he just came in blazing to the bathroom, and you have someone “jumping the gun” a bit, I’d say!
Perhaps you didn't read a few days ago, about the guy who had a .380 stuffed up his bunny hole.