Police are questioning two teenagers after a 14-year-old boy was killed in a knife attack in north-east London.
A neighbour saw Paul and his friend stumbling along the road
Paul Erhahon was stabbed to death in Leytonstone and a 15-year-old boy hurt in what is thought to be an attack involving a large gang of youths.
A neighbour described how she rushed to help when she heard Paul's mother's frantic shout for help when she found her son on Friday night.
A 13-year-old boy and a 19-year-old man were arrested overnight.
Paul and his friend, who has not been named, were found by officers in Crownfield Road, Leytonstone, shortly before 2000 BST.
The 14-year-old died in hospital and his friend remains in a critical condition.
Elizabeth Chapkins, a neighbour who lives opposite the spot were Paul was found, said she rushed to help Paul's mother.
"She was saying 'we came to this country for a better life, we didn't come here for this'," said Ms Chapkins.
The neighbour saw Paul and his 15-year-old friend stumbling along the road but at first thought they were drunk.
Then she heard the screams when Paul's mother found her son slumped on the floor yards from his home.
LONDON'S TEENAGE VICTIMS
James Andre Smartt-Ford, 16, shot in Streatham, 3 February
Michael Dosunmu, 15, shot in Peckham, 6 February
Billy Cox, 15, shot in Clapham, 14 February
Kodjo Yenga, 16, stabbed in Hammersmith, 14 March
Adam Regis, 15, stabbed in Plaistow, 17 March
"She [Paul's mother] lifted his shirt to show me and there was blood all over him. He must have been trying to get home to his mum," she said.
"He was barely moving, but he was going into unconsciousness and he could not speak. She was screaming blue murder.
"I don't want to hear or see anything like that again. There was nothing we could do."
Det Ch Insp Matthew Horne said they understood that a large group of youths had been involved in an incident in the foyer of Gean Court, a block of flats in Langthorne Road, during which they thought the two boys had been stabbed.
"It is believed they then managed to stagger the short distance to nearby Crownfield Road," he said.
"A number of youths were seen running from the scene."
Police have said the incident may have been gang-related and they are reviewing CCTV footage.
The latest attack follows the killing of five other male youngsters in London in the past two months.