(BBC) The Manchester Arena inquiry has been told there were enough transport police officers on duty on the night of the bombing.
Insp Michelle Wedderburn insisted British Transport Police (BTP) staffing levels were adequate and no sergeant was required on site.
Security expert Dr David BaMaung earlier told the inquiry there were too few BTP officers on duty.
He said there was a lack of experience among those who were there.
‘Deterrent’
The bomb detonated by Salman Abedi killed 22 people and injured hundreds more as they left an Ariana Grande concert on 22 May 2017.
