Manchester Arena bomber 'carried bomb around for hours'
Police say Salman Abedi walked around city centre all evening before setting off device.
Police say they still believe other people were potentially involved in the Manchester Arena bomb attack.
At a briefing at GMP headquarter – head of the North West Counter Terrorism unit Chief Superintendent Russ Jackson says while other people may have been involved in the 22nd May attack there's no evidence of other suicide bombers.
He also said other arrests were expected and police were keen to speak to Salman Abedi’s brother Hashem who’s currently being held in Libya.
Detectives are also still working out how exactly Abedi got the skills to make his back-pack bomb, but Mr Jackson said such know-how was available both online and in war-torn countries such as Libya and Syria, and the bomb could be entirely home-made.
Abedi's device was described as “substantial'' in size, and he had put it inside a tin with the shrapnel, nuts and bolts placed around it but would not say where it was assembled.
“The devastation was huge,'' Mr Jackson said, with 22 dead and scores injured, some losing limbs, left paralysed and others disfigured with facial injuries.
“What's clear from going to the scene is just the enormity of it. It was incredibly difficult for the officers at the scene.''
He said after the area was cleared and forensics had completed their work, officers placed roses down next to name plates to show families the spot where their loved ones died on private visits to the scene.
Other officers had to go through mobile phones found in the carnage, finding photos of children on the bloody screens.
Senior detectives are now in the process of visiting each of the families.
Mr Jackson added: “It is my anticipation that at some point more arrests will be made.”
Police also say they’re still looking for a blue suitcase which Salman Abedi used in the days leading up to the attack.
It's thought that despite spending several hours walking around the city centre with the bomb that evening, Abedi had always intended to carry out his attack at the arena.