<sod >Witnesses told how a gang of about eight youths, some armed with sticks, shouted 'let's chase him down', before he was stabbed 19 February, Rotimi Oshibanjo, 26: Rotimi was fatally stabbed inside a property in the Halliday Square housing estate 20 February, Sadiq Mohamed, 20: The aspiring accountant was found with serious stab wounds in Malden Road, in Belsize Park 20 February, Abdikarim Hassan, 17: Abdikarim died in the street after being attacked in Camden 23 February, Josef Boci, 30: Jozef was beaten up in the street in Greenwich and died in hospital  Seyed Khan, 49, who was found dead in London at the beginning of the month - on February 1   Youth worker Kwabena Nelson< eod>< sod > Witnesses told how a gang of about eight youths, some armed with sticks, shouted 'let's chase him down', before he was stabbed 17 February, Josef Boci, 30: Jozef was beaten up in the street in Greenwich and died in hospital  19 February, Rotimi Oshibanjo, 26: Rotimi was fatally stabbed inside a property in the Halliday Square housing estate 20 February, Sadiq Mohamed, 20: The aspiring accountant was found with serious stab wounds in Malden Road, in Belsize Park 20 February, Abdikarim Hassan, 17: Abdikarim died in the street after being attacked in Camden  20 February, name unknown, 24: Shot in Westminster  25 February, Michael Boyle, 44: Stabbed in Southwark.< eod>