Two teenagers have been arrested on suspicion of the murder of a 17-year-old boy at a park in Luton.
Officers were called to Kingsway Recreation Ground shortly after 6.30pm on Friday following reports of disorder, where "a number of teenagers" were seen "carrying large knives", Bedfordshire Police said.
A 17-year-old boy was taken to hospital with multiple stab wounds but died a short time later, the force said.
Police said that two boys, arrested on Friday on suspicion of violent disorder, have now been further arrested on suspicion of murder.
One of the suspects is currently in hospital with serious - but not life-threatening - injuries, police said.
The victim has not yet been formally identified and police said officers are supporting his family.
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Detective Chief Inspector Nick Gardener said on Friday: "Horrific violence in Luton has sadly cost a teenage boy his life today.
"Our thoughts are first and foremost with the loved ones of the boy who lost his life in such tragic circumstances."
He added on Saturday afternoon: "Our officers are in the area carrying out additional high-visibility patrols, and we are continuing to engage with local members of the public.
"We would also like to remind the public to not share any distressing videos or images as this can be concerning for family involved, and also form a vital part of our police investigation."
Police urge anyone with information to contact them.
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