John Key booed by section of the crowd at NRL Nines on Waitangi Day

It was a visit to the hallowed turf of Eden Park today for the Prime Minister and not the traditional Waitangi Day Treaty Ground visit.

Bad weather didn’t stop the PM attending the NRL Nines on Waitangi Day. Source: 1 NEWS

John Key missed the dawn service at the National Marae in Waitangi today for the first time as Prime Minister.

Instead he went along to the NRL Nines at Eden Park in Auckland where he was booed by one section of the crowd.

Mr Key's choice to visit a relatively safe managed event like the Nines comes amidst heightened security concerns for MPs in the wake of this week's TPP protests.

"We shut my electorate on Friday. It seemed like the sensible thing to do. It's been pretty disappointing to see the Molotov cocktails through the windows, it's a level of expression that's not only unlawful but very dangerous," said Mr Key.

His comments come after the fire-bombing of Social Development Minister Anne Tolley's Whakatane office.

And while ONE News last night wrongly reported that Labour MPs David Shearer and Phil Goff received death threats specifically against them after speaking up for the TPP, Mr Goff confirms that "a generalised death threat to MPs" was emailed to his parliamentary offices.

Meanwhile Mr Key says he's happy to go back to Waitangi next year, election year.