Traumatised supermarket staff were sent home after a 15-year-old boy was stabbed to death during a fight.
A second 15-year-old boy remains in hospital recovering from with stab wounds suffered during the violence in front of horrified Sainsbury’s shoppers in Wandsworth, south west London, yesterday afternoon.
The victim is the fourteenth teenager to be murdered in the capital this year.
Officers shouted “this is a crime scene: get back! Get back!” as horrified shoppers witnessed the bloody aftermath while paramedics administered CPR.
A Sainsbury’s worker, who did not wish to be named, said: “Some of our staff members saw the whole thing.
“They could see through the window as they were standing inside.
“They were very upset, and they were all sent home early.
“I did not witness what happened, but I saw the young boy lying on the floor. The shop will stay closed today.”
A local resident, 62, was accidentally caught up at the crime scene while locking up his bike when officers ordered him to move.
The man, who did not want to be named, said: “I was innocently arriving to do some shopping and locking up my bike when it happened.
“The police officer was shouting ‘this is a crime scene: get back! Get back!’ It was very fresh when I got here.
“There was a boy lying on the floor and paramedics were administering CPR. Then there was somebody else at the old cemetery.
“People have been quick to troll Sadiq Khan on Twitter but what can he do? Teenage crime is much bigger picture than that.”
Lucy Martinsdale said she was shaken at the news as she stood by the cordon today in the hope she could offer to support community members.
The campaigner runs Violence Breeds Violence and organised Operation Shutdown, an anti-knife crime protest at Westminster Bridge in April last year.
Lucy, who was previously affiliated with Brixton gangs, said: “I was quite shaken when I heard about it last night and I ended up going to bed at 1am.
“I really hope it isn’t one of my young people. We have a 15-year-old youth who has been stabbed three times. He was in intensive care.
“I have not been told a name. I work with teams in Wandsworth so it is possible I have worked with him.”
She added: “More needs to be done about knife crime. It’s so toxic. The more the kids read on social media, the worse it is.”
Lucy went on to explain how she came to work as a campaigner.
“I witnessed my cousin be murdered when I was ten and my cousin was shot dead when I was 21,” she said.
“That’s when I started what is now a successful campaign.
“Children today are walking past a murder scene with their parents.
“It’s just wrong. I brings me back to when I was ten-years-old.”
The victim’s next of kin have been informed and a post-mortem examination will be held.
Met Police have arrested two teenagers and enquiries are ongoing.
A spokesperson said: “A 19-year-old man was arrested on suspicion of GBH.
“He had suffered a head injury that did not require hospital treatment.
“A 17-year-old male was arrested on suspicion of affray. Both are in police custody.”