Someone stole my pet horse

In-game name: Nightlighted
What happened: While I was gone between 30-31/12 someone either stole my horse (Captain Jack was it’s name) or killed it.
Coordinates (if applicable): 285 / 64 / -2533
Who you suspect and why: There are no suspects, anyone could have done it.
Screenshots and evidence:

This is the location the horse was before I logged out.

I found your horse a little ways away from your house.

Please try to keep it in an enclosed area…