The Apple people supposedly were there to vouch that they had detected the missing item at that house, and perhaps to use their snooping equipment to try to locate where it was in that house, but all that should have been controlled by the police, and it should have been made clear who was police and who was Apple. Apple and the cops both scrod up and both would, I think, be liable if not also criminally chargeable in this escapade.
And for Apple to search the computers in his home is beyond the pale - big time. Do they now have copies of his data? Who was allowed to see that data? Who has access to it now?