Not much information on this story, but it looks like a retired cop and gun collector died, with no one to take care of the estate. The local criminal population quickly moved in and started stealing from the collection. Once guns started showing up in traces, the police moved in on the abandoned property.
The real shame of it is, this guy pretty clearly was quite a collector, and you an guarantee each and every one of those firearms is now going to be destroyed. If there really are Title II firearms among the collection, as the article says, they will be lost forever to the civilian market. I would be surprised if there are not also historical pieces that will be lost.