Declaring that the death Bob Woolmer was of natural causes is an attempt to close the case once for all. Due to progress in medicine and forensic evidence, it's possible to establish the nature of any death in a relatively short time, especially his body wasn’t in a state of decomposition. It’s possible to know if a person was subjected to torture, poison, asphyxia, strangling etc.
At first, his death was treated as a criminal case. Now surprisingly, it is revealed that he died of natural causes. This also needs further international police investigations into the methods used by Jamaican police in their “investigations” to establish the whole truth. Otherwise, his death will remain a mystery or simply a cover-up to avoid shocking revelations reaching high circles.