UK's May says police believe they know identity of Manchester attacker

British Prime Minister Theresa May on Tuesday (May 23) called an attack on a packed concert hall in Manchester, which killed 22 people and wounded 59, a sickening act targeting children and young people.

May said police believed they knew the identity of the bomber, but could not confirm the name as yet.

Police have said a 23-year-old man had been arrested in connection with the attack carried out late on Monday evening as people began leaving a concert by Ariana Grande, a U.S. singer who attracts a large number of young and teenage fans.

"All acts of terrorism are cowardly...but this attack stands out for its appalling sickening cowardice, deliberately targeting innocent, defenceless children and young people who should have been enjoying one of the most memorable nights of their lives," May said outside her Downing Street office in London.

Monday's attack was the deadliest in Britain since four British Muslims killed 52 people in suicide bombings on London's transport system in 2005.