(BBC) Security staff were not expected to check the area where Salman Abedi waited in a CCTV blind spot before the Manchester Arena bombing, an inquiry heard.
Showsec supervisor David Middleton said he had never been instructed to check the mezzanine area.
“We were to keep the steps clear but above the steps was not our domain,” he said.
Abedi hid for nearly an hour before going downstairs to detonate the bomb.
Twenty-two people were killed and many more injured when … they left the Ariana Grande concert on 22 May 2017.
