It comes as the Home Office announced a raft of anti-knife crime plans on Wednesday, including making retailers report bulk or suspicious sales to police, and increasing the jail sentence for selling weapons to children, or illegal blades such as zombie knives, to two years.
Jason Junior Romeo died after an altercation in Bodney Road, Hackney, at around 6pm on Tuesday, the Metropolitan Police said.
Four of the five victims have been adult males, and the other was 14-year-old boy Kelyan Bokassa, who was stabbed around 27 times as he travelled home on a route 472 bus in Woolwich, south-east London, on January 7.
A Hackney resident who said he had known Mr Romeo for years previously described him as a “good guy” who “was not a trouble-maker”.
“If any young person feels they need to carry a knife please speak to a parent, carer, teacher, youth leader or adult you trust and we can get you the support to step back from that decision safely.”.