A FOURTH man has been arrested on suspicion of murder after a double shooting at the Willow Park caravan site.

David Castell, 29, and Shane Hill, 20, both from Southend, were killed in a fatal shooting at the travellers’ site in Beck Row last month.

A 40-year-old man from the Mildenhall area was arrested today on suspicion of murder and is currently being questioned by detectives at a police station in Suffolk.

Two other men from the Mildenhall area and a man from Cambridgeshire remain on police bail having already been arrested in connection with the murders.