The prosecution rested its case yesterday in the capital murder trial of former Marine Eddie Ray Routh, who is accused of killing "American Sniper" Chris Kyle and another man in 2013.

New video released by Routh's lawyers shows him moments after he was apprehended by police following a high-speed chase.

While handcuffed in the back of a police car, Routh told authorities, "I've been so paranoid and schizophrenic today, I don't even know what to think of the world. I don't know if I'm insane."

Routh's mother testified yesterday that her son's life took a turn for the worse after he returned home from serving in Iraq and Haiti with the Marines.

Fox News legal analyst Peter Johnson Jr. said on "Fox and Friends" this morning that Jodi Routh's testimony revealed that her son was suicidal and had threatened family members, in addition to being on nine different medications.

As for the video of Routh in the squad car mere moments after his arrest, Johnson noted that at times Routh appears at times agitated, sleepy and possibly intoxicated.

Johnson said the fact that Routh displayed self-recognition of schizophrenia and paranoia could hurt the insanity defense.

"He appears to be recognizing right from wrong ... on that day," Johnson said. "Knowing right from wrong, that's what the jury will be making a determination about. And they got a lot of stuff on both sides of the ledger yesterday to make that determination."

Watch the clip above.