Round electrical ceiling light boxes are they screwed in
Carpender put three ceiling light outlets in and a switch. Wanted to put a switch in and found out that the three outlets on top are all hot even through the switch outlet wires aren't connected. I assume he wired the lead light outlet and piggie tailled one wrong. Problem is I can only assume that the light closes to the switch is the first power source. He also used round outlight boxes in the celing with not visible screws holding them in. Can you pry them out to see the wiring>