A 16-year-old schoolboy left dying in a pool of blood after he was stabbed by a gang has been named by police as Kodjo Yenga.
A post mortem examination found Kodjo, of Portland Road, London, died from a single stab wound to the heart. Witnesses described seeing a gang of boys and several girls chanting "kill him" and throwing sticks at the boy, before he was attacked and left to die in Hammersmith Grove, west London.
Seven young males, all black and aged between 13 and 21, have been arrested over the murder and remain in custody, police said.
Officers believe there were many people in Hammersmith Grove at the time of the attack and urged witnesses to contact them.
Local resident Minaxi Patel, who works in a convenience store on the street, said she saw a boy followed by a group of boys and several girls who were shouting at him.
"It looked like he was trying to get away. They came up to our shop and picked up a pipe, which they threw at him.
"The girls were screaming 'kill him, kill him'. Then they ran off down the road," she told London's Evening Standard newspaper.
A long stretch of Hammersmith Grove remains cordoned off by police officers, and several bunches of flowers have been left outside the row of shops near to where the boy was stabbed.
A Metropolitan Police spokesman said officers found the boy suffering from a stab wound after they were called to a "disturbance" at Hammersmith Grove at 5.30pm on Wednesday. The teenager was taken by ambulance to Charing Cross Hospital in a critical condition but died at 6.15pm.
The 16-year-old was a student at St Charles Catholic Sixth Form College in west London.
