(Cleveland)--- Cleveland police have a new piece of evidence in the search for double-murder suspects. Detectives say a pair of car keys linked to a vehicle at the Mr. cars dealership were found last week at Humphrey Park. Dealership owners Michael and Trina Kuznik were gunned down inside the east 185th street business two weeks ago. Police are also testing DNA in their dog's mouth to see if he bit the suspects before the animal was also killed by them.
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