The father of Norwegian mass killer Anders Behring Breivik said he fears his son is becoming even more extreme and dangerous in prison.

A judge denied Anders Behring Breivik the public stage he wanted to air today, ruling that the first hearing for the man who has confessed to Norway's twin terror attacks be held behind closed doors.

The man who has confessed to the twin terror attacks in Norway which killed 93 people will appear in court today and has requested an open hearing so he can explain his massacre to the public.

French police were today searching the house of the father of the man who has confessed to the bomb and gun attacks in Norway which killed 93 people.