The girlfriend of the man charged with killing Dutch populist leader Pim Fortuyn has been arrested, police say. Petra Lievense is being questioned about materials found at her home which could have been used to make a bomb, according to prosecutors. They say she appeared to have been planning a "serious offence". She is not said to be suspected of involvement in the murder of Mr Fortuyn, who was shot dead in a car park in May. Her boyfriend, animal rights activist Volkert van der Graaf, was arrested shortly after the shooting. He has been on hunger strike in custody...