Prime Minister Jacinda Ardern has just arrived at the meeting, having flown in from New Plymouth.
Police Commissioner Mike Bush, NZ Security Intelligence Service director-general Rebecca Kitteridge and Government Communications Security Bureau boss Andrew Hampton are also expected to attend the meeting.
According the Department of Prime Minister and Cabinet website, ODESC:
• Provides all-of-government co-ordination at the chief executive level of the issues being dealt with through the response;
• Provides strategic advice on priorities and mitigation of risks beyond the lead agency's control;
• Ensures that the lead agency and those in support have the resources and capabilities required to bring the response to an effective resolution;
• Provides the linkages to the political level, including supporting ministers to make decisions about strategic policy, authorisation of resources or any other decisions which sit within ministers' area of control;
• Exercises policy oversight and advises the Prime Minister, Cabinet, and, when activated, the Cabinet National Security Committee, accordingly.