In north London, two people a 15-year-old boy and a 23-year-old man—were fatally stabbed.
The two were discovered in Islington just after 11.30 p.m. yesterday with stab wounds.
Despite their best attempts, the boy was declared dead at the scene just after midnight after police and paramedics sped to Elthorne Road.
The second victim was brought to a hospital in west London, where he eventually passed away.
Officers have informed the next of kin of those killed and they are being supported by specially trained officers.
A third victim, believed to be aged 28, was found at an address in N19 and had also suffered a stab wound.
This is a breaking news story. More to follow.