BBC News Published image copyrightSuffolk Police image captionLinda Smith was last seen alive in the High Street in Earls Colne, 60 years ago "Tremendous obstacles" stand in the way of finding the killer of a 12-year-old girl, 60 years on, police have said. Linda Smith was last seen while on an errand to the newsagents in Earls Colne, Essex, on 16 January 1961. Her body was found four days later in a field in Polstead, Suffolk. She had been strangled with her school scarf. Det Supt Andy Smith said: "The chances of being able to bring Linda's killer to justice after all this time are extremely remote."