Three teenagers person been arrested connected suspicion of execution aft a 17-year-old lad was stabbed to decease successful a suspected "targeted attack".
Police said they were called to the country adjacent Logan's Meadow, Cambridge, a tiny quality reserve adjacent to the River Cam, astatine astir 14:50 GMT connected Saturday.
The lad was pronounced dormant soon after.
A 14-year-old lad was arrested astatine his Cambridge location and 2 17-year-old boys were arrested astatine their South Cambridgeshire homes, the unit added.
The 14-year-old was arrested astatine astir 23:30 GMT connected Saturday and the different boys were arrested astatine astir midnight, a spokeswoman said.
They each stay successful constabulary custody.
Det Supt Carl Foster, from the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit, said: "While we are incapable to corroborate the origin of decease until a post-mortem introspection has been conducted, we judge the lad was stabbed successful a targeted attack.
"We judge determination were members of the nationalist astatine the country who spoke with paramedics but near earlier our officers arrived. I americium straight appealing for these radical to marque interaction with america please."
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