Mugger who killed this teenager for his phone faces life sentence

A serial mugger who knifed a 16-year-old boy to death when he tried to stop him stealing his mobile phone is facing a life sentence. Kyi-Riece Sylvester, 18, stabbed Stelios Averkiou three times in the thigh in the Lordship Recreation Ground in Tottenham, north London, on 1 August last year. Stelios was rushed to Royal London Hospital in Whitechapel by air ambulance but one of the wounds was 18cm deep and he died nine days later. Sylvester denied murder but…