Transcript for Robert Durst's Attorney Says Prosecutors 'Don't Have Evidence'
The latest on Robert durst. Charged with murder he is expected to appear in court today. Ahead of that his lawyer sat down with our Matt Gutman in new Orleans now. Good morning, Matt. Reporter: Hey, good morning, George. Robert durst's attorney says to expect a mini trial. Both sides expected to bring witnesses and evidence and learn a lot more about allegations 15 years in the making, specifically why the LAPD believes Robert durst murdered his best friend. This morning, Robert durst back in court, his lawyers challenging his New Orleans arrest on gun and drug charges. There is almost no chance that a judge is going to rule that the arrest warrant was invalid. This case is almost certainly going to go to trial. Reporter: On March 14th officers raided his New Orleans hotel room saying they found a man on the run. With an illegal gun, a big bag of pot, a full face and neck latex mask and over $42,000 in cash in his room. A conviction on those gun and drug charges could mean life in prison thanks to durst's past felony convictions. Perhaps one reason why his attorney dick degeurin is so focused on getting durst back to California. Why so eager to get back to fight a murder accusation of all things? Because I think they don't have evidence. This case has all of the salaciousness that attracts attention. Reporter: Degeurin telling us durst has as bepberger syndrome which influenced him to do "The jinx." One thing about aspberger's is the person is trusting. He trusted the producers and that was misplaced trust. Reporter: Former westchester D.A. Who investigated him in his first wife's disappearance, degeurin accusing her of a witch hunt and will try to call her for a witness the second time. Asked for a subpoena for Jeanine Pirro. Reporter: You have a thing with Jeanine Pirro. No, I don't. It seems like you do. The hint, of course, is that it's Robert durst who has a thing for Jeanine Pirro. Durst probably wouldn't be here were it not for her, his attorney tells me. He's still in a psychiatric ward an hour outside of town but off suicide watch. George. Thanks very much.
This transcript has been automatically generated and may not be 100% accurate.