London, July 11 : Austrian incest fiend Josef Fritzl, who held his daughter as a captive in a cellar dungeon for 24 years, has made a request officials to allow him to leave his prison cell after admitting that he can no longer stand being caged.

The 73-year-old devil had kept daughter Elisabeth locked in a windowless cellar in Amstetten, Austria, and fathered her seven children before being caught by police.

Now, after just two months of incarceration and despite his fear of being attacked by fellow prisoners, he has demanded his right to 30 minutes exercise every day.

Fritzl has now twice had half-hour walks, protected from other inmates by a close guard of prison officers.

"Mr Fritzl is accommodated in a cell for two and recently he has made use of his right to go outside for half an hour per day,” the Telegraph quoted prison spokesman Lieutenant Colonel Erich Huber-Guensthofer, as saying.

A source said: "He usually sits there watching television all day, especially news programmes about him. He''s terrified that someone will attack him or try to kill him." (ANI)