Robert Durst's first court date culminated in a shouting match after none of his lawyers' witnesses showed up. The 71-year-old real estate scion awaiting extradition to face murder charges in California appeared in New Orleans accused of illegal gun possession. His defense team was expected to challenge the case by accusing police of searching Durst's hotel room in the city without a proper arrest warrant. However, as a shackled Durst appeared to be sleeping in the courtroom, the judge raged at his attorneys for being unprepared as they requested to delay the hearing. SCROLL DOWN FOR VIDEO . Controversial: Robert Durst, 71, (file image pictured) appeared to doze of in the New Orleans courtroom as his lawyers became embroiled in a shouting match with the judge after no witnesses showed up to the trial . In custody: Durst has been in custody since his arrest on March 14 and labeled a suicide risk as he waits to be extradited to California where he will be tried for the 2000 murder of his longtime friend Susan Berman . Durst was arrested on March 14 on charges of possession of a weapon by a felon and possession of a gun with a controlled substance, which carry a combined maximum sentence of 30 years in prison, but has yet to be formally charged. It was the day before the final HBO episode aired of The Jinx: The Life And Deaths Of Robert Durst. Authorities who searched the room, where Durst stayed under an alias, claim to have found over $42,000 in cash, a revolver, marijuana and a latex mask that could fit over his neck and head. FBI agents arrested Durst over fears he would flee the country, the agency has said. On Thursday, the judge eventually agreed to postpone the hearing until next week, when the witnesses - two FBI agents and a state trooper - could be charged with contempt of court for failing to appear. Long a suspect in the disappearance of his wife, Kathleen Durst, in 1982 in New York, Durst was acquitted in the dismemberment killing of his neighbor in Texas in 2003. He is now facing the death penalty in California, where he is accused of murdering his longtime friend Susan Berman in 2000. Two FBI agents and a state trooper ignored their subpoenas and could face contempt of court charges . The real estate heir was temporarily placed on suicide watch soon after his arrest. His lawyers claim his Asperger's Syndrome led him to erroneously trust the HBO producers, who screened semi-confessional interviews that will now be used against him in trial. Durst, who prosecutors have said is worth up to $100 million, has long been estranged from his powerful family, which has major New York real estate holdings. He has been held without bail at a facility for mentally ill inmates about 70 miles (110 km) from New Orleans, with local authorities having labeled him a suicide risk.
Durst, 71, was arrested in New Orleans hotel room day before HBO finale .
Police 'found revolver, marijuana, $42,000 cash, latex mask in the room'
He is waiting to be extradited for murder trial in California where he is accused of killing his longtime friend Susan Berman in 2000 .
Durst dozed off in courtroom as shouting match erupted between his lawyers and the judge because no witnesses turned up .
Two FBI agents and a state trooper allegedly ignored court subpoena .
Durst attorney claims there was not a legitimate search warrant .