UK blast: Blood, horror as bomber strikes young crowd; man arrested
An apparent suicide bomber detonated his explosives as pop singer Ariana Grande wrapped up her show Monday night in Manchester, England. The attacker, who was killed in the blast, targeted a largely young crowd, many of them teenagers and 'tweens. Police said children were among the 22 concert-goers killed. UK police have arrested a 23-year-old man in Manchester in relation to concert attack.