FALL RIVER (CBS) — A judge has granted Aaron Hernandez’s fiancee, Shayanna Jenkins immunity in the murder trial of the ex-Patriots player.

The immunity ruling suggests that Jenkins will be called upon by the prosecution to testify against Hernandez.

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Trial testimony so far suggests that Jenkins may know the answer to critical questions in the case, such as the location of the gun used to kill Odin Lloyd.

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Jenkins had been charged with perjury in 2013 after allegedly lying before the grand jury that eventually indicted Hernandez on a charge of first-degree murder.

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