William La Jeunesse updated us this morning on the case of a U.S. Marine who has been imprisoned for six months in Mexico.

Sgt. Andrew Tahmooressi's mother said Friday on “The O’Reilly Factor,” that her son is “highly despondent” as he continues to languish in jail, suffering from PTSD.

Tahmooressi was arrested at the Mexican border for possession of illegal firearms. He told authorities he had made a wrong turn and the guns were legally registered in the U.S.

La Jeunesse said defense attorneys are trying to convince a judge that Tahmooressi should be released due to his PTSD. A prosecution psychiatrist is set to examine Tahmooressi at some point after a hearing today.

The defense team's psychiatrist concluded Tahmooressi has PTSD and cannot be treated in prison.

Jill Tahmooressi explained that her son was in the process of moving to San Diego, which is why he had all of his possessions – including the guns – in his vehicle.

She reiterated that he immediately told authorities that he had the guns and that he had made a wrong turn.

There will be a House sub-committee hearing on Oct. 1 to examine Tahmooressi's case. His mother, a Marine who served with him in Afghanistan, and Montel Williams are scheduled to testify.