disturbed/disturbing thrill

Irelia20150604

Senior Member
Chinese
Source: Hong Kong’s Murder Mystery: Who Is Poisoning the Dogs?

Dogs have been poisoned all over Hong Kong, but Bowen Road’s central location — on a hillside lined with parks, shrines and elegant mansions that offers sweeping views of the city’s skyline — has meant that the cases there have attracted the most attention. Chris Patten, Hong Kong’s last colonial governor, almost lost his Norfolk terrier Whisky after the dog ate poisoned bait left along the road in 1997.

Officials still don’t know who is responsible. Some investigators believe that whoever is behind the poisonings gets a disturbed thrill from taking a life.
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Hi everyone! I don't quite understrand the bold part. Does it mean "thrill that disturbs other people"? If so, should it have been "disturbing thrill"?
 
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