Scotland Yard said Seydou Diarrassouba, 18, died of a single knife wound to the heart in the incident on Oxford Street in central London on Boxing Day.The killing happened in front of thousands of horrified shoppers, many of them tourists, after a fight broke out between two groups of youths at a Foot Locker store.A second man aged 21 was injured in the leg in another stabbing a few hundred metres away a few hours later.The two incidents have revived...
