Bristol - (Newshound): Bristol drag hunters have alerted the police following the discovery in a woodland fox hole close to where Jo's body was found.
Bored hounds had been chasing a squirrel when an altogether different scent saw them plunge inside an opening some 200 yards from a nearby golf course.
"It was Raggs and Buster, our two best dogs, who dragged out what we thought was a bit of old sacking," Master of the Hounds Sir Pomfret Gasher told reporters.
"Must have been snatched to featherbed the predator's scanty lair!
"Pregnant vixens are notorious for this sort of thing in the wintry weeks ahead of whelping."
The area was immediately sealed off as forensic sleuths began the painstaking search of a convoluted ten foot deep hole.
The sock will now undergo a barrage of tests as the hunt for a motive - and possible accomplice - continues to baffled local murder squad detectives.