UK raises terror threat level to critical, its highest

The terror threat level in the UK has been raised from severe to critical, its highest, which means more attacks are envisaged after the Tube bombing in London Friday. More military forces will be on standby to support the police. This was announced by Prime Minister Theresa May after ISIS took responsibility for the attack which injured 29 commuters and a man was arrested, with more suspects at large as members of a wider network.