(CNN) A former US soldier described as a "ringleader of trained assassins" is facing life in jail after being found guilty Wednesday of organizing the killing of a woman in the Philippines in 2012 for cash.

Former US sniper instructor Joseph Hunter, nicknamed "Rambo," was convicted along with two other men in a New York court Wednesday of conspiring to kidnap and murder as part of a murder-for-hire scheme following a 12-day trial.

Hunter, who for years worked as a soldier of fortune, is already serving a 20-year sentence over a range of charges, including the attempted murder of a US drug enforcement agent.

Geoffrey Berman described the case Speaking after the verdict, US AttorneyGeoffrey Berman described the case in a statement as "horrifying," with details "usually seen in action movies."

"(These men) conspired to end the lives of people overseas whom they had never met. Today a unanimous jury convicted them for their craven indifference to human life," he said.

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