Austrian cellar fiend Josef Fritzl has given his first interview from his prison cell one week after he was sentenced to life in prison.

Fritzl, 73, said he wanted to endure "the hardest punishment" after he locked his daughter in a cellar for 24 years and fathered seven children with her.

And unbelievably he revealed he wants to help his victims.

The monster again tried to justify his perverse "love" for his secret family.

He insisted: “I tried to make life in the cellar as pleasant as possible for my second family — and in the course of the years, a partnership between my daughter and myself.”

Click to view photos

His fantasy collapsed when he saw Elisabeth, who he locked up when she was 18, come into his trial and stare at him as he was made to watch hours of her harrowing testimony.

The next day he changed his pleas to guilty on all counts including raping her 3,000 times and the murder of their newborn son who died in his dungeon prison.

Fritzl added: “I had such a strange feeling which I can hardly describe but when she was there I can only say I felt somewhat different, knowing she was in the vicinity of me.

“After that, I want only the hardest punishment. Until the end.

“As I noticed that she was here, in the court room, and I finally turned, into the auditorium and looked and saw her myself, I was suddenly so ashamed.”

Elisabeth went into the courtroom in St. Poelten, Austria, as her videotaped evidence of her years of hell was played to jurors.

Fritzl, who had up until that point denied charges of murder and slavery, said: “I could hardly bear hearing what she was saying.

“But I deserved nothing better. I do not deserve indulgence. I knew I had to confess everything, I could not varnish over the truth any longer, before anyone.”

He said of his decision to change his pleas: “I understood, finally, what suffering I brought to my family.”

Click here to read more on Fritzl's interview at The Sun.