Tonight on ‘On The Record,’ watch Greta Van Susteren’s new interview with Sgt. Andrew Tahmooressi, the Marine being held in a Mexican prison.

The 25-year-old has been in jail since April after he said he mistakenly took a wrong turn and ended up at the Mexican border with three firearms in his vehicle.

Tahmooressi told Greta he has “high hopes” of being released soon.

He said, “I’m an innocent man. I think I have a good lawyer. I think the Mexican people, a lot of the Mexican people, know that I’m innocent and that even they know that there’s a lot of corrupt military and police officers in the government, and that I think they see this was just a mistake and that I was at the hands of some bad military officials.”

Watch the sneak peek clip above and tune in to 'On The Record' tonight at 7p/2a ET on Fox News Channel to hear more from Sgt. Tahmooressi.