They spoke with my neighbor to verify my story, then spent five minutes or so berating me and telling me that they should really arrest me for discharging a firearm within the city limits. Finally they let me off with a warning. They never made any attempt to catch the perpetrator.
I am not sure you can know that. There may have been other units in the area looking for the guy.
I'll share an older and simple story.
I was working on a rental property I own that was vacant at the time. I had parked behind the house to unload some stuff. I had left the front door and several windows open to let the place air out.
An older pickup truck pulled up in the driveway very slowly. A man who looked very much like he was a frequent user of methamphetamines got out of the truck and walked right in the front door. I was in the back and working in the kitchen. I know all of this only because I watched the video footage later.
I hear someone walking around in the front and went to check it out. I startled the hell out of the guy who was examining the wiring at a junction box (presumably to see if was copper). Conversation went like this:
Methhead: (Stands up, turns, starts to close the distance rapidly between me and him and then stops in his tracks)... "Hey, man I didn't know anyone lived here"
Me: (adopting more of a defense posture with hand on gun in holster) "I don't live here I am renovating and getting ready to rent it"
Methhead: (Stares intently at 1911 on my hip) "Oh I didn't mean to bother you man"
Me: "What are you doing in here?"
Methead: "Uh, I just like old houses... I just wanted to see what was inside..."
Me: "I'm inside, I am camping out here until I get the place rented"
Methhead: (backpedaling towards door) "Yeah man I am really sorry, I won't bother you any more, really sorry"
Me: (waits for methhead to leave and closes and locks door, shakes head)