An Arizona judge has denied efforts to block the release of records related to the investigation into the 2010 killing of a rancher along the U.S.-Mexico border.

Authorities say Robert Krentz was gunned down on his property near Douglas in southeast Arizona.

Investigators initially said they believed that a scout for drug smugglers was to blame for his killing, but the case remains open. The killing prompted renewed calls in Washington for increased border security amid the speculation that it was somehow tied to smugglers.

Krentz's wife sought to block the release of the case file as authorities continue to investigate, claiming her privacy interest outweighed the public's right to access.

Media attorney David Bodney, who has been fighting for transparency, says a judge denied her request yesterday.