The body of a former teacher who was jailed for sex offences against three boys has been found cut into six pieces. The dismembered body of Alan Wilson, 51, an expert on gruesome murders, was discovered in bags yesterday wrapped in a carpet and partly buried under rubbish in a communal garden behind an Edinburgh tenement block. Forensic teams searched the garden and a ground floor flat yesterday. A man was being questioned last night. Police sources said they did not believe the killing was a revenge attack. The scene of the grisly discovery, in the prosperous Merchiston area, is...