Four teenagers have been arrested in connection with the murder of a man in an underpass.

Three boys, aged 15, 16 and 17, and a 16-year-old girl were held after a body was found in Peterborough early this morning, Cambridgeshire Police said.

The dead man, in his 20s, was found in an underpass in the Bretton area of the city shortly after 1.20am.

A police spokesman said: "The death is being treated as murder."

The four youths arrested are being held at Thorpe Wood police station.