Six teenagers and a 52-year-old man have been arrested after an 18-year-old was stabbed to death in Ilkeston, Derbyshire.
Four 17-year-old boys have been arrested on suspicion of murder.
Two girls aged 15 and 16 have been arrested on suspicion of assisting an offender, as has a man, 52.
Police were called to reports a man had been stabbed on Rose Avenue on Saturday evening.
They found the victim on nearby Heanor Road with a stab wound but despite the efforts of the emergency services, he was pronounced dead at the scene just before 9pm.
“The investigation is very much in its early stages and we are urging anyone with information that may assist with our inquiries to contact us as a matter of urgency,” said Detective Chief Inspector Claudia Musson.
The teenager’s family have been made aware and are being assisted by specially trained officers.
The murder probe is being led by the East Midlands special operations unit.
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Police are particularly keen to hear from people with CCTV or doorbell footage and any dashcam footage between the times of 7pm and 9pm in the areas of Heanor Road, Rose Avenue, Summerfields Way, Kedleston Drive and Peveril Drive.
Anyone with any information has been asked to contact Derbyshire Police quoting incident number 940 of December 28.
