( CNN ) A federal grand jury has charged millionaire real estate heir Robert Durst , a convicted felon , with unlawful possession of a firearm . In this week 's indictment , Durst , 71 , is accused of possessing a .38 caliber revolver , which authorities allegedly found in his hotel room last month . He faces a maximum of 10 years in prison if found guilty of that charge , according to the indictment . The charge is the latest in a litany of accusations . A Louisiana judge ruled last month that Durst , who is charged with first-degree murder , will be held without bail at a facility near New Orleans . Durst was featured this spring in `` The Jinx , '' a HBO documentary about him . He 's accused of killing his friend Susan Berman at her home in California in 2000 . He also faces state weapons and drugs charges in New Orleans . Last month , court documents claimed that Durst had a loaded .38-caliber revolver , marijuana , his passport and birth certificate , a latex mask with salt-and-pepper hair attached and more than $ 40,000 cash . He also had a UPS tracking number . The package was intercepted by the FBI , prosecutors said , and it contained clothing and more than $ 100,000 in cash . But the bigger courtroom fight will probably unfold in Los Angeles , where the district attorney filed a first-degree murder charge against Durst last month . He awaits extradition to Los Angeles to face that charge . If convicted , he could face the death penalty . Prosecutors accuse Durst of `` lying in wait '' and killing Berman , a crime writer and his longtime confidante , because she `` was a witness to a crime . '' Berman was shot in the head in her Beverly Hills home in December 2000 , shortly before investigators were set to speak with her about the 1982 disappearance of Durst 's first wife , Kathleen McCormack Durst . Durst has long maintained that he had nothing to do with Berman 's death or his wife 's disappearance . It 's not the first time he has been accused of murder . He admitted killing and dismembering his neighbor at a 2003 trial , but he was acquitted after arguing that he acted in self-defense . FBI agents have also asked local authorities to examine cold cases in locations near where Durst lived over the past five decades , a U.S. law enforcement official said . Unsolved cases in Vermont , upstate New York , the San Francisco Bay Area and Southern California are among those getting a new look , the official said . Durst 's attorney , Dick DeGuerin , said it 's a sign that authorities are desperate . DeGuerin has said Durst has serious medical conditions . He is suffering from hydrocephalus , which required brain surgery a couple of years ago , DeGuerin said . Doctors implanted a stent on the right side of his head , the attorney said . `` At the same time he was in the hospital , he had an operation on his esophagus to remove cancer . So he 's got some serious health issues . ... He 's lost a lot of weight . He 's not in good health , '' DeGuerin said . DeGuerin also said that Durst is `` mildly autistic '' and has received treatment in the past from one of the country 's leading experts in Asperger 's syndrome and autism .
Durst , a convicted felon , charged with unlawful possession of a firearm . He is accused of possessing a .38 caliber revolver and faces up to 10 years in prison .