The wrecked mother of a 16-year-old man who was stabbed in the street shouted, "My son, my son," as he lay on the ground.
The paramedics tried to rescue the boy, but he was pronounced dead at 23.41 in Tulsil Hill in southern London last night, the Metropolitan Police said when she opened a murder investigation.
Witnesses have reportedly described how the mother cried when her son lay on the ground.
One said she could not get the mother's cries out of her head and said the boy looked like he was sleeping.
Elena Erik, 42, told the Evening Standard: "I looked from the balcony and saw the mother.
"She was crying" my son, my son, "as he lay on the floor."
Paulina Wedderburn, 52, lives nearby and saw the teenager in a driveway.
She added, "I can not get the mother's cries out of my head."
The neighbor described how the boy looked like an angel.
The 16-year-old victim was a drill rapper known as JaySav, it came out earlier.
Friends of the teenager, known as John, said he was a member of a local band called Lower Tulse Hill (LTH) that made rap music videos about their exploits.
It is alleged that in his music he knocked over people cheffing – or stabbing enemies.
He also allegedly bragged about "drugs, money and Skeng" slang for a pistol.
The police were initially called at 22.53 to report a shootout in Greenleaf Close.
Officers, however, believe that the boy had suffered stab wounds rather than gunshot wounds.
A kitchen knife was visible in the bushes less than 20 meters from the crime scene on Tuesday morning, the Evening Standard reported.
A statement by the Metropolitan Police states today: "Following the death of a 16-year-old man in Lambeth, the murder investigation continues.
The police were summoned to Greenleaf Close, Tulse Hill, on Monday, November 5, at 10:53 pm for reports of a shootout.
"Officers participated with the London Ambulance Service (LAS) and found that a 16-year-old man on the street collapsed with injuries – he was said to have been stung.
"At the time, there was no evidence that a firearm was fired.
"Despite the paramedics' efforts, the man was declared dead at 23.41 at the scene."
The police confirmed that the boy's next relatives are aware of this.
Formal identification is imminent, and an autopsy will take place on Thursday at the Greenwich morgue.
There were no arrests and the investigations continue.
The alleged murder would increase the number of murders in London this year to 117.
Investigators of the Murder and Major Crime Command, led by Detective Chief Inspector Richard Vandenbergh, have opened an investigation. He said:
"At this early stage, I appeal to anyone with information that could support this investigation to speak with the police.
"We believe the victim was attacked by a number of suspects, and the altercation would undoubtedly have drawn the attention of those nearby.
"Have you seen or heard anything, and if so, no matter how insignificant you think it may be, call – your information may prove crucial."
Officers also turn to anyone who may have taken pictures or pictures of the incident on their mobile phone to contact them.
Anyone with information will be asked to contact the Incident Room on 0208 721 4961 or call Crimestoppers anonymously at 0800 555 111.