pinit_fg_en_rect_red_20 GEN - New Zealand National Party Denies Hacking Treasury
New Zealand dollar notesImage copyrightAFP
Image caption New Zealand's Treasury reported the hack to police

New Zealand's main opposition party has denied hacking into the government's computer systems to steal documents relating to the country's budget.

The National Party, which leaked details of the budget two days ahead of schedule on Tuesday, said it got the information legitimately.

On Wednesday the Treasury said its systems had been "deliberately and systematically hacked".

It confirmed the matter had been referred to police.

Treasury Secretary Gabriel Makhlouf said hackers had attacked government systems 2,000 times over 48 hours.