A 17-year-old boy stabbed to death in west London has been named as Simarjeet Singh Nangpal.
Four men – aged 21, 27, 31 and 71 – have been arrested on suspicion of murder after police were called to reports of a fight in Hounslow on Wednesday morning.
The teenage victim was found at the scene with stab wounds and despite the efforts of the emergency services, was pronounced dead.
Detective Inspector Martin Thorpe said: “We are working around the clock to find those responsible for Simarjeet’s murder, as his family struggle to come to terms with their loss.
“Four men have been arrested and our enquiries continue.
“I would urge anyone with information about how the events unfolded or anyone who may have captured the incident on their phone, dash cameras or doorbell footage to please come forward.”
Detective Superintendent Figo Forouzan added: “Our thoughts remain with Simarjeet’s family at this extremely difficult time.
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“No family should have to go through what they are experiencing.
“This incident will undoubtedly cause wider concern, and I want to reassure the community that we will do everything in our power to find those responsible.
“In the coming days you will see extra officers out on patrol in your area.
“Please do speak to them about any concerns you may have.”