There's been more revelations about a Fonterra briefing document that made its way to the Beehive ahead of a proposed law change that scuttled a court case involving the dairy giant. This is the briefing document that was handed to a former staffer in the Prime Minister's office. It was regarding a climate activist's case against major emitters. On Tuesday afternoon, a spokesman for the Prime Minister revealed the briefing was also sent by Fonterra to the staffer's private email account. Political reporter Lillian Hanly spoke to Lisa Owen.