"Murder squad detectives have ordered further tests to find out what led to the death of a British spy who lay undiscovered in his flat for up to a fortnight. The decomposing remains of Gareth Williams, 30, were apparently found by police stuffed inside a holdall in the bath of his London home. Officers broke down the door after attempts by the Foreign Office to locate him via his former landlady failed. A Home Office pathologist failed to find a cause of death following a post-mortem examination of Mr Williams' body. Further tests, including toxicological analysis of his blood for evidence of drugs and alcohol, will now take place. Investigators from the Met's homicide and serious crime command have labelled the death as ""suspicious and unexplained"". Sources said there was no evidence Mr Williams had been stabbed, contradicting earlier reports."