Peterborough murder victim Michael Green died from head injuries
A 23-year-old man whose body was found in a Peterborough underpass died from head injuries consistent with an assault, tests have revealed.
Michael Green, of Muskham in Bretton, was found in an underpass near Tyesdale, Bretton, at about 01:20 BST on Wednesday.
Three boys, aged 15, 16 and 17, and a 16-year-old girl were arrested later that day on suspicion of murder.
They remain in custody at Thorpe Wood police station.