Analysis - National MP Grant McCallum spoke for the room, repeatedly muttering "Jesus!" as Erica Stanford levelled extraordinary allegations against her own ministry.

The Public Service Commission will investigate officials' behaviour.

The Immigration Minister says more than $30m was wasted and two governments weren't told the truth.

Analysis - National MP Grant McCallum spoke for the room, repeatedly muttering "Jesus!" as Erica Stanford levelled extraordinary allegations against her own ministry.

But CEO Nic Blakeley said if issues were substantiated, employment action would follow.

The NZ First leader says he told the Immigration minister some time ago her ministry was the "worst department in this country by miles".

Immigration Minister Erica Stanford says she was 'furious' she was misled.