Random empty claim

I've been wandering around the map after not playing for a while and I've noticed an empty 5x5 claim next to a big, raided, abandoned settlement. The settlement had no walls or buildings anymore so it must've been abandoned for a long time.
Is it possible that the empty claim is some sort of an assurance that nobody claims the settlement, and if they do they'll get raided as well? Or could it just be a coincidence. Because it doesn't seem like someone would spend money on a claim and keep it up for months without a reason.
Is it possible that the empty claim is some sort of an assurance that nobody claims the settlement, and if they do they'll get raided as well? Or could it just be a coincidence. Because it doesn't seem like someone would spend money on a claim and keep it up for months without a reason.