Fucking wild one from yesterday not far from me, a Grantville GA gun store was robbed and three people inside were murdered. The victims were the stores owners and their son. I've covered a ton of gun store robberies and they're usually smash-and-grabs by idiots, and nothing about this feels like that. The shooter or shooters took the store's DVR/disc, took specific weapon types, and as noted cleaned the scene by murdering everyone present. They also made sure to hit the store when no one but the family/owners was there.
The ATF and GBI are on the case of course, and the 1-800-ATF-TIPS line is open for people with info about it.