The victim, named by police as Mohammed Afzal, was attacked just before 9pm on Friday in a car park on Market Street in Bury, Greater Manchester. The 19-year-old suffered several stab wounds and later died from his injuries.
A boy aged 12 is among seven people arrested after 11 officers were attacked on a north London high street. Police were called to reports of a large group attempting to steal items from a shop in High Road, Wood Green, just before 5pm on Tuesday.
The arrests of two men aged 19, a third aged 17 and a 20-year-old woman were made at their home addresses in London, Staffordshire, and the West Midlands, with support from West Midlands Regional Organised Crime Unit (Rocu) and the East Midlands Special Operations Unit.