Kerstin Fritzl, 19, who lived her entire life as a prisoner of her father Josef Fritzl in a subterranean dungeon, is currently in a coma from which medical experts claim she will not recover.

“The young woman is in a critical condition. She is suffering from multiple organ failure. That means her chances of survival are very low,” a spokesman at the hospital where Kerstin is being cared for declared. If the girl dies, prosecutors will bring a charge of murder against her 73-year-old father who kept her locked up in the cellar under his home in the town of Amstetten.

Kerstin’s mother Elisabeth, 42, who was kept in the cellar for 24 years, is currently being treated at a clinic outside Amstetten. Policemen described the woman as “very disturbed.” Her sons Stefan, 18, and Felix, five, who were kept underground their entire lives are being treated by a team of psychologists.

Elisabeth Fritzl was kept in an underground dungeon where the ceiling was just 1.70 meters. She told policemen that her father began drugging her in August 1984 and kept her in the cellar abusing her for over two decades. Investigators said a letter written by Elisabeth surfaced a month after her disappearance, asking her parents not to search for her.

The incestuous relationship allegedly produced seven children, who are now between 5 and 19 years old.

Fritzl admitted holding his daughter Elisabeth captive and fathering her seven children. It emerged that he also faced a series of rape allegations in the past. It appears Fritzl was convicted of one rape and jailed for 18 months in the 1960s. A second alleged victim declared she was also raped by Fritzl around the same time.

Fritzl was remanded in custody Tuesday. He is in isolation, as inmates locked up on pedophilia charges are frequent targets of attacks by other prisoners, AFP reports.

Josef Fritzl lived upstairs with his wife, Rosemarie, who police said had no idea about her husband’s other family living in the cellar.