Sadiq Khan comments on the latest stabbing in Havering, east London, in which a 17-year-old girl died. The London mayor called the stabbing a 'senseless loss of life' as he appealed for the public to be the 'eyes and ears' and contact police with information. Report by Etemadil. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn