This sounds particularly bad:
Forensic investigators have apologized for the bungling of the inquiry into the mysterious death of a codebreaker employed by the Government Communications Headquarters (GCHQ).
In August 2010, Gareth Williams, described as a mathematical genius by his peers and employed at GCHQ since leaving university, was found dead in his flat in London. Williams, who had recently qualified for deployment with MI6 — Britain’s version of the CIA — was found naked and partially decomposed in a sports bag that had been locked from the outside and placed in the bath.
In the pre-inquest hearing on Friday, the court heard that the investigation into Williams’ death had been botched from the start. LGS Forensics said that DNA found on Mr Williams’ body was investigated, but later turned out to have been transferred there from one of the forensic scientists investigating the death, and a search of the apartment turned up no clues as to his death.