An investigation has been launched into how protesters managed to break into National's campaign launch.
A security breach overshadowed the National Party's plan for state asset sales at its campaign launch in Auckland yesterday.
It's promising to pump $1 billion into modernising schools and up to $7 billion on what it calls "productive infrastructure".
But Prime Minister John Key was stopped in his tracks when five protestors stormed the launch, yelling "stop the war on the poor".
Security stopped the demonstrators climbing onto the stage and he continued his speech.
He told RadioLIVE this morning he's not too concerned about it.
"We'll go and check it out," he told RadioLIVE.
"Everyone had a ticket that was there, so look, I don't know. At the end of the day it's like any other stunt."
RadioLIVE / 3 News