Police are at a railway site in Sharnbrook, north Bedfordshire as part of an investigation after a human head was discovered 40 miles away at Mepal quarry, near Chatteris on Monday.

Specialist forensic teams are scouring the land for other body parts and a JCB digger is searching a landfill site beneath the village’s historic viaduct.

It is believed the human remains may have been transported in landfill from the Sharnbrook site, south of Mill Road, where a Network Rail building project - including the repainting and strengthening of a railway viaduct - is taking place.

The work is part of an upgrade to the high speed line between St Pancras and Nottingham.

Detective Inspector Jerry Waite, from the Beds, Cambs and Herts Major Crime Unit (MCU), said: “We are conducting enquiries both locally and across the county borders, and would urge anyone with information about the finding to contact us.

“At this stage we do not know if the head is male or female, however we have got officers carrying out searches at a site in Sharnbrook, Bedfordshire, as we believe this is where the remains may have come from.”

Anyone with information is asked to call the Major Crime Unit on 101 or Crimestoppers, anonymously, on 0800 555 111.