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Explosion After Ariana Grande Concert in Britain Kills 22

British police say at least 22 people were killed and 59 wounded in an explosion Monday night outside a concert venue in Manchester, England. "We have been treating this as a terrorist incident and we believe at this stage the attack last night was conducted by one man," Ian Hopkins, chief constable of Greater Manchester Police, said Tuesday. Hopkins said investigators believe the attacker was carrying an improvised explosive device, which he detonated, and that he died at...

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