Armed police have today stepped-up patrols in the capital after a man slashed passers-by at random, just after 10.30pm last night killing a woman in her 60s dead and injuring five others.
A 19-year-old was arrested six minutes later in Southampton row after being hit with a Taser.
(http://www.theweek.co.uk/75163/more-armed-police-on-streets-of-london-to-fight-terror-threat)