Rock weighing 3.5kg stained with pensioner's blood, Sliabh Liag trial hears

A rock weighing 3.5 kilograms that was found at the top of Ireland's tallest cliffs contained hundreds of hairs and was heavily bloodstained with DNA matching that of a pensioner who had his skull broken in and was allegedly thrown into the sea, a jury has heard. Dr Conor Young, of Forensic Science