Millionaire Robert Durst was illegally arrested on charges that he murdered a woman in California , as well as drug and weapons charges filed in New Orleans , attorneys said in court papers Friday . In the papers filed at the State Criminal District Court in New Orleans , William Gibbens and Dick DeGuerin asked a magistrate judge to schedule a preliminary hearing so that they can prove that there is no probable cause to keep Durst jailed . They say he should be released . ' I think he 's an easy target and everybody 's piling on . ... They 're gon na find nothing , '' Dick DeGuerin , the lead attorney on Durst 's team , told KTRK-TV . ' I think Louisiana and their elected officials want a piece of the publicity pie . ' Scroll down for video . 'Invalid arrest ' : Robert Durst 's legal team accused authorities in documents today of arresting the real estate heir illegally , as his attorney blasted Louisiana officials for wanting a piece of the 'publicity pie ' ' I think he 's an easy target and everybody 's piling on ... They 're gon na find nothing , Dick DeGuerin ( pictured ) , the lead attorney on Durst 's team , said Friday . The judge agreed to schedule that hearing during another court appearance by Durst on Monday in New Orleans . The attorneys also asked the judge to order that evidence be preserved from the hotel where Durst was arrested . They are seeking any and all records related to Durst and Everett Ward , the pseudonym Durst used to check into the hotel . The documents blasted the arrest , which the attorneys say was orchestrated 'to coincide with the final episode of the HBO docudrama The Jinx . The six-part documentary concluded Sunday . Durst , a member of a wealthy New York real estate family , was charged with murder in California for the December 2000 shooting death of Susan Berman . Durst 's arrest came shortly before the HBO finale about his links to three killings — that of his first wife , who disappeared in New York in 1982 ; Berman , the daughter a mobster and a close friend who acted as his spokeswoman after his wife disappeared ; and a 71-year-old neighbor in Texas whose dismembered body was found floating in Galveston Bay in 2001 . Frail : Durst is on suicide watch at a Louisiana detention center . He is expected to appear in court Monday . Durst has only ever been tried for the Texas killing , and he was acquitted of murder . Durst waived extradition in New Orleans but is being held there on charges that he was a felon in possession of a gun and with illegally carrying a weapon with a controlled substance . Court documents say investigators found nearly $ 43,000 in cash , a gun and a rubber mask that could cover his head and neck in his hotel room when he was arrested . Authorities have also said marijuana was found in the room . However , Durst 's attorneys say his previous convictions are not serious enough to merit the gun charge . In the case , prosecutors could seek to play portions from The Jinx that concluded with the eccentric millionaire off camera talking to himself in a bathroom with his wireless microphone still live . He has been charged in Los Angeles with first-degree murder in the 2000 killing Susan Berman , the daughter of a mobster and a close friend who acted as his spokeswoman after his wife disappeared in New York in 1982 . Durst , 71 , who is estranged from a family that has a real estate empire worth an estimated $ 4 billion , has long denied killing Berman and Kathleen Durst , who was declared dead even though her body was never found . Investigators had reopened that case and planned to speak with Berman when she was shot once in the back of her head at her home near Beverly Hills . After the killing , Durst disguised himself as a mute woman and moved into a cheap Galveston , Texas , boarding house where he killed an elderly neighbor in 2001 . He claimed self-defense and was acquitted of murder but was convicted of unlawfully disposing of the man 's body , which was found chopped up and floating in Galveston Bay . While legal experts said Durst 's remarks off-camera and to filmmakers during the production will most likely be admissible , prosecutors will have to decide if they outweigh the possibility that the defense would play other portions of interviews showing him denying any killing . ' I would see this moment of unguarded truth as worth a lot of those denials , ' said George Fisher , a former prosecutor and professor at Stanford Law School . 'The flat out meaning of the statement is very clear on its face . ' In the case of Blake , prosecutors sought to introduce a portion of a jailhouse interview of the actor discussing his family with Barbara Walters because it contradicted other evidence . The defense then successfully pushed to bring in the rest of the interview . 'It did a great deal both to humanize him and so he was n't just seen as a celebrity , ' said M. Gerald Schwartzbach , who won Blake 's acquittal on a murder charge involving the killing of his wife . 'There was an image projected that a lot of people had about Robert as a difficult person . In this video , he came across as a very sympathetic person . ' Prosecutors are not commenting on the Berman case while Durst is still held in Louisiana , where he also faces firearms charges .
Durst 's legal team say authorities made an 'invalid arrest ' March 14 . The attorney for the family says they are still waiting to hear from police about what happened in their home on April 9, and that a warrant was issued for his client's arrest.