By Chris Harris
Updated November 17, 2015 at 10:08 PM EST
Pat Sullivan/ AP

This article originally appeared on PEOPLE.COM.

Next month, New York real estate heir and suspected murderer Robert Durst is expected to amend his initial plea on a federal gun charge.

According to court records obtained by PEOPLE, Durst, 72, will appear during “change of plea” hearing that is scheduled for Dec. 17 at 2 p.m. He initially pleaded not guilty to the charge.

However, Durst, who has been in custody in Louisiana since his arrest in March, could end up pleading guilty to unlawful possession of a firearm at next month’s hearing.

As a convicted felon, Durst is legally barred from carrying a gun. But law enforcement officials allegedly recovered a handgun from Durst’s hotel room while executing an arrest warrant on March 14.

Durst, who is being held without bail, also faces murder charges in Los Angeles, where he is accused in the unsolved slaying of Susan Berman, his longtime friend.

Durst’s trial on the federal gun charge was set to begin Jan. 11, 2016. A guilty plea next month would expedite his extradition to Los Angeles on the murder charge.

Dick DeGuerin, who is heading up Durst’s defense team, told PEOPLE recently that he’s eager to get his hands on the evidence the prosecution has collected.

When contacted Tuesday by email, DeGuerin responded with a prepared statement that reads, “Bob Durst did not kill Susan Berman and doesn’t know who did. From the time of his arrest in New Orleans in March, Bob and his legal team have been eager to get to California so he will finally have the opportunity to prove his innocence. We hope to resolve all other charges right away so that Bob can be transferred to California for trial.”