A 16-year-old boy was fatally stabbed in Hillingdon, west London, making him the 30th teenage homicide in the capital in 2021, surpassing a peak of 29 in 2008.
The fatal stabbing on Thursday evening happened shortly after a 15-year-old boy was also found fatally wounded in Ashburton Park, Croydon.
The 16-year-old was found by police and paramedics suffering from a stab wound but he died at the scene.
No arrests have been made.
The Met Police said the victim’s next of kin had been informed and they were being supported by officers.
Adding it was too early to say whether the two killings, more than 20 miles apart, were linked.