A daughter of Austrian child abuse victim Elisabeth Fritzl has been reunited with family members after being woken from an artificial coma.

Kerstin Fritzl, 19, is expected to make a full recovery and has even stated a wish to go to a Robbie Williams concert.

Kerstin is the eldest child of the incestuous relationship between Josef Fritzl and his daughter Elisabeth who was forced to live in a cellar for 24 years.

Doctors said Elisabeth and the six surviving children fathered by Fritzl were now living in a house on hospital premises to promote a normal living environment.

Fritzl, in investigative custody since the case was exposed in April, kept his daughter in a windowless basement under his house in the central Austrian town of Amstetten.

Berthold Kepplinger, director of the hospital where the family members are being treated, said: "The reunion of Elisabeth's eldest daughter Kerstin with her family a few days ago was a moving moment, and for us the surprising recuperation of Kerstin was a great relief."

He said Kerstin, who was put into an artificial coma after she suffered cramping fits due to oxygen deficiency and kidney problems, opened her eyes on May 15 and rejoined her family on Sunday.

Three of the children of the incestuous relationship, the youngest of whom is now aged five years, were locked up with their mother, while another three were raised by Fritzl and his wife Rosemarie as their own.

Prosecutors are investigating the 73-year-old for coercion, rape and incest though he has not been charged. Police say he has admitted incarceration and incest.

Rosemarie is not under suspicion and is with the rest of the family at the residence on the hospital grounds in Amstetten.

The case came to light two months ago after Kerstin fell seriously ill and was brought to the hospital by Fritzl.

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