. >> sandra: catherine herridge is standing by in washington but we begin with rick levinthal. set the scene for us there at this hour. >> reporter: we're outside victoria station, one of two main rail hubs in the city of manchester. just behind that is the venue, manchester arena, which isn't just the largest in the u.k. we're told it's the largest public concert venue in all of europe. it can hold up to 21,000 people. it was packed last night. police believe this bomber may have entered either through the train station or possibly off a street going up some stairs. we'll push in and show you some doors. he could have entered right off the street into that area that you mentioned a public area between the train station and the venue. then timed the blast of the improvised explosive device to maximize the impact on the crowd of mostly teens and young adults who were streaming out the doors as the event was ending. the victims of this horrific attack including 18-year-old georgia, who met ariana couple years ago. an 8-year-old described simply as a beautiful little girl, loved b

rick levinthal is live in manchester. rick? >> reporter: stunning news from libya that the suspect may have phoned his mother and said forgive me just hours before the attack as manchester police continue with a fast and furious investigation. not revealing what they've recovered from all of those raids at homes across the city and surrounding suburbs, but saying they were, in fact, items that were very important to the investigation. also saying the arrests so far, eight of them, are significant. they include the bomber salman abedi's father and brother. salman's sister told "the wall street journal" that her brother was motivated by anger over the u.s. air strikes in syria. the british prime minister said the threat level will stay at critical. sandra, the british transpor ad to train some trains for the first time ever. >> sandra: rick, we know at this point there's growing anger over these leaks of this investigation to the u.s. media. what do you know about that? >> reporter: well, there are a lot of people in the british

. >> rick levinthal joins us with the latest. good afternoon to you. >> reporter: shannon, news breaking with police calling the investigation intense. and that includes the arrest of the suicide bomber's older brother here in manchester. that happened yesterday. also the arrest of his younger brother in tripoli, libya, with suspicions of connections to isis. there are also reports the bomber's father has now also been taken into custody. they do say they have found ties, investigators have, between the bomber and both al qaeda and isis and firmly believe that abedi was part of a larger terror network and certainly had help in carrying out monday night's attack. numerous raids have been carried out in the manchester area, including one on an apartment building. there is particular interest in finding the bomb maker who built the sophisticated ied that detonated at the manchester arena monday night that killed 22 including a police officer and woupbing more than 100 we or told. some walked in and out of hospitals, but 20 were inju

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