JonBenet Ramsey’s brother is renewing his family’s appeal to Colorado Gov. Jared Polis to allow an independent agency to conduct DNA testing in the unsolved 1996 murder of his sister, who was 6, after a leading genetic investigator claimed she’s confident her team could help.

“Hi – @GovofCO. #Parabon and @CeCeLMoore is the premier shop in the world to successfully hunt #childkillers,” John Andrew Ramsey, JonBenet’s half-brother, tweeted Monday. “Let’s get to work! #jonbenet #boulderco.”

Parabon NanoLabs, the Virginia-based firm Ramsey mentioned in his tweet, has a track record of using complicated and innovative genetic genealogy research techniques to crack cold case murders.

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