Anne Heche's son is disputing the validity of his late mother's will as it was supposedly not signed in her handwriting.
As a result of this claim, 20-year-old Homer Laffoon has filed a petition for control of his mother's estate following her sudden death in August - a filing Heche's former partner James Tupper has objected to.
The paperwork, which was obtained by People, claims that both Laffoon and Heche's other son, 13-year-old Atlas Tupper, are the rightful heirs to Heche's estate.
"The Estate consists of two (2) intestate heirs—Homer Heche Laffoon and Atlas Heche Tupper," the papers say. "Homer Heche Laffoon is an adult and the proposed Administrator. Atlas Heche Tupper is a minor."
"Filed concurrently with this petition is a Petition for Appointment of Guardian ad Litem for the minor, which specifically requests that the guardian ad litem be granted the authority to waive bond on behalf of the minor," they continue.
Bryan L. Phipps of Buchalter Law Firm also confirmed that the papers had been filed in a statement to the outlet.
The statement reads: "As the only adult heir of Anne Heche, Homer Laffoon filed a petition for probate this past Thursday asking the LA County Superior Court to appoint him Administrator of Anne's estate.
"Homer is also in the process of having a third party appointed 'guardian ad litem' for his younger brother, Atlas, to represent Atlas' interests in the probate proceedings.
"Despite reports to the contrary, Homer is not asking the court to appoint him as the 'guardian,' sole guardian or guardian ad litem for Atlas."
Heche was declared legally dead at the age of 53 on August 12 after a catastrophic car crash left her with a severe brain injury. The Psycho star fell into a coma following the crash, which took place in Mar Vista, Los Angeles.
The Los Angeles County Medical Examiner-Coroner officially ruled that the actress died due to inhalation of smoke and thermal injuries. Her manner of death was listed as an accident, per a report by People.
Following his mother's passing, Homer shared his gratitude to those who had shown him and his family compassion in the wake of the tragedy.
Per TMZ, he said: "My brother Atlas and I want to thank Tyler, Noelle and all the amazing people at Hollywood Forever for their kindness, compassion and generosity of spirit. We are convinced our Mom would love the site we have chosen for her; it's beautiful, serene and she will be among her Hollywood peers.
"Most importantly. Hollywood Forever is a living place, where people attend movies and concerts and other events. She was our Mom, but the kindness and the outpouring of the past few days reminded us that she also belongs to her fans, to the entertainment community, and now, to the ages."