before he went on to kill 22 people at the manchester arena. the brother said he didn t know the specifics of the attack. didn t know what the target was, but he was aware his brother was plotting a terror attack here in the united kingdom. meanwhile, raids had been going on throughout the night and morning as the police try to drill down on the network that would very likely facilitated the attack. they are trying to find who made the bomb. an scorccording to explosive ex at cnn, the bomb is made with high level of sophistication. they do not believe abedi could have made it without help. they are trying to find out if there is a bombmaker and larger isis network on the loose here in the uk.