It seems that the whole Bob Woolmer murder investigation hangs on the laboriously long wait for the toxicology and blood tests.
Rory Carroll's report in the Guardian yesterday raised some interesting points. Chief amongst them was the fact that Woolmer was found slumped up against the bathroom door in his hotel room, so that the chambermaid, who discovered him, had to push the door open. When asked how the killer could have left the bathroom, the detective leading the investigation, Mike Shields said only: "good question".
There is the possibility the broken bone in Woolmer's neck (which triggered the murder investigation) was caused by efforts to resuscitate him.