Carrying a 9kg necklace seems a bit silly. Though I suppose "for weight training" could just as well mean something medical, like needing to build up muscle mass after an operation.
What I need to know is: how is a man that was "not supposed to be in the room" specifically getting fetched by a technician to go into the room? I would have said "do not go past the antechamber" a dozen times on the way there. Did the wife calling out to him just turn off his brain, did the technician fail to inform him, or did they both not realise the metallic necklace was on him?