'American Sniper' Trial: Eddie Routh Attorney Says Jurors Who Saw Movie Didn't Hurt Case

Some jurors admit to having seen the blockbuster film before giving a verdict.

Attorney Shay Isham, who was part of the team that defended Routh, said in an interview with ABC News’ "Nightline" that there were concerns about selecting jurors for the highly publicized case, but they didn't see the movie as a reason to dismiss them.

“I’ve been picking juries here for 19 years and in a whole lot of other counties, too. Just because someone has seen the movie doesn't automatically disqualify them,” Isham said. “Most of the people that can do that job and can take an oath to not be leaning one way or the other, and wait until the evidence is finished to make up their mind and deliberate the case; most of them that tell me that, they can set that aside.”

Routh had pleaded not guilty by reason of insanity and his attorneys had argued the former Marine had mental disorders and was in the grips of psychosis when he fatally shot Kyle and Littlefield.

Because Routh’s lawyers never disputed he killed the two men, the biggest question the jurors had to answer was whether they thought he was legally insane or whether he was faking his claims of insanity.

Seven members of the 12-person jury spoke to ABC News today about how they came to the unanimous decision after two and a half hours Tuesday night.

"That was something that we really had to figure out," juror Kristina Yager told ABC News. "In the beginning, I know a lot of us came into the jury questioning that, but evidence shows that there was a real definite pattern there."

Routh’s mental state was at the crux of the case, with both sides presenting experts who disputed different diagnoses up until the final hours of the trial.

While calling rebuttal witnesses to the stand Tuesday, the defense also re-called Dr. Mitchell Dunn, the psychiatrist who concluded Routh was insane in earlier testimony.

Isham, Routh’s attorney, said he doesn't second-guess using the insanity defense for Routh.

And Isham added that PTSD was “never a part of the defense strategy.”

“Mental illness was what he was diagnosed with, mental illness was what he went to the hospital for,” he said.

Routh was sentenced to life in prison without the possibility of parole, but Isham said he expects an appeal to be filed in this case.