It sounds as if the correct title should have said. Radio Shack burglarized not robbed. So he probably broke in during the night and made off with a truckload of stuff.
Not according to the article. It says he bound the people at the store with cable ties and stole their cellphones along with other merchandise. That's robbery, not burglary.
It's likely the cellphones were his downfall, not the other merchandise, since any GPS gear in the stolen merchandise would not have been properly activated for tracking (unless maybe he stole display items).