A 15-year-old schoolgirl is among the seven people arrested by police after a teenager was stabbed to death on Saturday.
Officers were called to Rose Avenue in Ilkeston, Derbyshire, by the East Midlands Ambulance Service after an 18-year-old man was found with a stab wound at 8.20pm.
Despite the best efforts of medical staff at the scene, the victim died just before 9pm.
A murder investigation was launched by Derbyshire Police and four 17-year-old boys were arrested on suspicion of killing the man.
A 52-year-old man, 15-year-old girl and a 16-year-old girl were also arrested on suspicion of assisting an offender.
All seven people remained in police custody whilst officers continued their enquiries at the scene today.
Pictures from the residential street showed the area cordoned off with police tape and a blue tent was visible in the middle of the road.
As the investigation continues, the force has launched an appeal to the public for any information that will assist them.
Officers were called to Rose Avenue in Ilkeston, Derbyshire, by the East Midlands Ambulance Service after an 18-year-old man was found with a stab wound at 8.20pm
Pictures from the residential street showed the area cordoned off with police tape and a blue tent was visible in the middle of the road
Detectives are particularly interested in any CCTV, doorbell or dashcam footage between the times of 7pm and 9pm in the areas of Heanor Road, Rose Avenue, Summerfields Way, Kedleston Drive and Peveril Drive.
A Major Incident Public Portal has also been set up which can be used to pass information and submit footage.
Detective Chief Inspector Claudia Musson, who is leading the investigation, said: ‘We are in the very early stages of the investigation, and we are treating it as an isolated incident.
‘We are keen for anyone with information to contact us as a matter of urgency to assist with the inquiry into the death of this young man.’