Fifteen-year-old is arrested over death of schoolboy who died after being stabbed in front of school gates in front of horrified pupils

A 15-year-old boy has been arrested following the stabbing to death of teenager Quarami Barnes outside a London school. Quarami, also 15, was found with multiple stab wounds in Willesden, north west London, at around 3.30pm on Monday. He was rushed to hospital by paramedics, and is understood to have spoken to his mother and said goodbye before being pronounced dead at a London hospital. Metropolitan Police...