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				Police said on Thursday that the DNA of the severed finger, 
				which came from a male, did not match any missing person or 
				crime reports of the time and they have no other clues. 
				 
				It was found by a dog in the rear courtyard of a London shop in 
				2010. 
				 
				"We have now exhausted all lines of inquiry and have been unable 
				to find out who the finger belongs to and how the finger became 
				detached in the first place. It is quite the mystery," said 
				Detective Constable Tom Boon. 
				 
				"We are now appealing for the public to help us solve the case." 
				 
				(Reporting by Elisabeth O'Leary in Edinburgh; Editing by 
				Catherine Evans) 
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