Robert Durst, the real estate scion awaiting extradition to California to face a murder charge, will remain jailed in Louisiana after investigators his attorneys wanted to question did not appear at a court hearing on Thursday.

Attorneys for Durst, recently featured in the HBO documentary "The Jinx: The Life and Deaths of Robert Durst," had subpoenaed two FBI agents and a Louisiana state trooper to ask them about Durst's arrest on weapons charges in New Orleans.

His lawyers argue his arrest and the initial search of his hotel room last month without a warrant were improper.