Josef Fritzl has been sentenced to life in a psychiatric institution after being found guilty of all charges at his murder and incest trial.
He did not seek to appeal the verdict.
Eight jurors reached a unanimous guilty verdict on the murder charge.
He was also found guilty of the other charges of incest, rape, sequestration, coercion and enslavement for fathering seven children with his daughter Elisabeth during 24 years of sexual abuse in a damp dungeon.
He was found guilty of murder by neglect for letting one of the babies die.
This carried the maximum sentence of life.
His lawyer, Rudolf Mayer, had argued that the defendant 'didn't choose to be the way he is', and that Fritzl's psychological abnormalities should be regarded as extenuating circumstances.
This morning, Fritzl addressed the jurors directly.
'I'm sorry from the bottom of my heart,' he said. 'Unfortunately, I can't change anything now.'
The psychiatrist who examined him said there was a danger he would re-offend and recommended he be placed in a mental institution.
Prosecutors earlier called for the maximum sentence at the trial in Sankt Poelten in Austria.
The 73-year-old stunned the court yesterday by pleading guilty to murder and enslavement, saying he had been shamed into reversing his pleas by the testimony of his daughter Elisabeth.
He had already admitted incest and rape.
Psychiatrist Adelheid Kastner told the court yesterday that Fritzl still posed a danger as he regarded himself as 'born to rape' and should be held in a mental facility.
He entered the court today surrounded by police in a grey suit. He did not try to cover his face from the cameras, as on previous occasions.
Fritzl locked his daughter up in a cellar of the family home on 29 August 1984.
He told his family she had joined an obscure sect.
During years of sexual abuse, Elisabeth gave birth to seven children, one of which died shortly after birth.
Three were brought to live with Fritzl and his wife Rosemarie, 69, with whom he had already had seven children, while three others spent their entire lives in the dungeon, never seeing daylight.
