Fritzl psychiatrist: "he is as sane as you and I"

The jury in the trial of Austrian Josef Fritzl, who kept his daughter in a cellar and fathered her seven children, has retired to consider its verdict.

Fritzl is expected to spend the rest of his life in jail.

Jeremy Paxman asks Dr Heidi Kastner, Fritzl's forensic psychiatrist who gave evidence to the court, for her assessment of him.