Manchester Arena attacker 'did NOT act alone': Terrorist milled around city centre 'for hours' before targeting Ariana Grande gig as police reveal they've found explosives at a 'number of addresses'

Manchester Arena suicide bomber Salman Abedi did not act alone, police believe. 
Anti-terror officers investigating the attack have found explosives at a number of addresses around the city, they revealed today.
It also emerged Abedi, 22, spent hours 'milling around' in the busy city centre before detonating his bomb in the foyer of an Ariana Grande concert, killing 22 people including seven children.
The explosion ripped through the arena foyer as thousands of fans, mostly young girls and their parents, were leaving the venue following the  performance.
Police previously said they believed Abedi assembled the device by himself in the days before the attack.
They had said it was unclear whether he acted alone in obtaining materials for the bomb which officers believed were stored in a white Nissan Micra found parked in the Rusholme area of the city.
But today they revealed they now believe he had help from others as he plotted the attack. 
Russ Jackson, head of counter terrorism policing in the north west of England, said today: 'We do believe that there are other people potentially involved in this. 
'We don't believe it's a large network, we do believe there may be other arrests in the future.' 
Manchester Arena attacker 'did NOT act alone': Terrorist milled around city centre 'for hours' before targeting Ariana Grande gig as police reveal they've found explosives at a 'number of addresses'  Manchester Arena attacker 'did NOT act alone': Terrorist milled around city centre 'for hours' before targeting Ariana Grande gig as police reveal they've found explosives at a 'number of addresses' Reviewed by Alexander Von Stern on 04:01:00 Rating: 5