Two machete-wielding youths who smiled as they fatally stabbed a 14-year-old schoolboy on a bus have been locked up for life.Aspiring rapper Kelyan Bokassa called "I want my mum" after he was mortally wounded in front of horrified passengers aboard the route 472 bus in Woolwich, south-east London, on January 7.His killers, aged 16, pleaded guilty to Kelyan's murder and having a knife.In a televised sentencing on Friday, Judge Mark Lucraft KC detained them at His Majesty's pleasure for life.Cher

Two machete-wielding youths who smiled as they fatally stabbed a 14-year-old schoolboy on a bus have been locked up for life.Aspiring rapper Kelyan Bokassa called "I want my mum" after he was mortally wounded in front of horrified passengers aboard the route 472 bus in Woolwich, south-east London, on January 7.His killers, aged 16, pleaded guilty to Kelyan's murder and having a knife.In a televised sentencing on Friday, Judge Mark Lucraft KC detained them at His Majesty's pleasure for life.Cher Lillie from community interest company Project Lifeline read a statement on behalf of Kelyan's mother Marie Bokassa.