British authorities are reviewing means and methods to bolster national security in light of the terrorist attack at Ariana Grande's concert in Manchester where 22 died and dozens more were injured.
U.S.Air Force photo by R.Nial Bradshaw
The suicide bombing occurred close to one of Manchester Arena's exits minutes after Grande finished her concert with the song "Dangerous Woman." She left the stage prior to the blast.
Counterterrorism inspectors are operating based on the assessment that the attack was, indeed, the work of a suicide bomber who infiltrated the crowd outside the area dedicated to the performance.
This was where U.S.law enforcement sources who were briefed on the ongoing investigation say attendees streamed out of the concert.
Authorities are relying on camera footage from security cameras onsite, and they warned U.S.officials about what information was preliminary.
The events of the concert from before to after the attack are being reconstructed based on security footage.
Law enforcement officials say the explosion occurred by an entrance where attendees usually get their tickets on their way into the venue.A witness conforms that detail.
Michael Downing is the former director of counterterrorism for the Los Angeles Police Department and executive vice president of Prevent Advisors, a firm that specializes in stadium and arena security.
He says most venues in both America and Europe do well detecting weapons, including bomb technology, but he concedes that the attack points to holes that need to be patched.
"Obviously, we are going to have a look at ingress and egress," Downing says.