London Mayor Sadiq Khan has launched a major crackdown on the "scourge of knife crime" in the capital after three fatal stabbings were reported within hours of each other.
He has pledged an extra £625,000 to fund knife and gang crime projects in the city after the number of offences in London involving knives rose by 11% in 2016.
New measures will also see schools given metal detecting "knife wands" and a new community sentence for those convicted of knife possession.
It came as Scotland Yard launched three separate murder investigations after fatal stabbings across the capital.
Italian national Pietro Sanna, 23, was found with multiple stab wounds after a "brutal and vicious attack" in his own home in Canning Town at 11.40pm on Monday, police said.
A man in his 30s also died after officers were called to reports of a stabbing in East Ham shortly after 8pm.
Meanwhile, a 29-year-old man died after reports of a stabbing at a property in Islington at around 2am.
Since the start of the year until June 18, 24 people under the age of 25 have been fatally stabbed in the capital.
Mr Khan said: "Every death on the streets of London is an utter tragedy, and I am deeply concerned about the rise in knife crime on London's streets. Dozens of families have been bereaved; many more have seen their loved ones severely injured.
"We need to send a strong signal that carrying and using knives is totally and utterly unacceptable.
"The only way we can truly beat the scourge of knife crime on our streets is by properly funding youth services - the Government needs to step up, reverse these cuts and help provide the services we need to tackle knife crime."