Josef Fritzl returns to his infamous cellar...

Josef Fritzl has been taken back to the house in Amstetten, west of Vienna, where he allegedly abused and jailed his daughter and her children. 

Mr Fritzl was taken there under heavy police guard on Thursday to give investigators a tour of the cellar. 

Officials say the visit is to help see if the cell can be opened from outside. 

Mr Fritzl is accused of keeping his daughter for 24 years in a cellar he built, sexually abusing her and fathering seven children with her. 

Lawyers for Mr Fritzl insist that an electronic timer would have unlocked the door in time for the occupants to free themselves if anything had happened to him, but investigators think the door could have been sealed off with metal bars. 

Prosecutors say he has confessed to keeping his daughter Elisabeth captive in a cell at his home.

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See also:

• Fritzl-like case in Poland: man accused of raping his daughter and holding her captive for 6 years...
• Poland to castrate sex offenders...
• Amstetten: Elisabeth Fritzl tells her mother to get out...
• Amstetten: police involved in the Fritzl case traumatised and in need of counselling...
• Josef Fritzl, the monster of Amstetten, living it up in Thailand while his daughter Elisabeth...