The National Party headquarters in Auckland was broken into overnight, MP Paula Bennett said on Monday.
She told Magic Talk three laptop computers were taken from the offices in Epsom.
"It looks like they've jimmied a window and come in through there which of course... triggered alarms. They've grabbed laptops and run."
She said as the headquarters is "down underneath - it's quite an unusual place", she suspects the theft was targeted.
"If it was kind of an opportunist - you wouldn't expect it to be kind of opportunist, would you?"
Bennett said they want to make sure they've got all the facts right before saying more.
She wasn't sure if there are security cameras.
"We're still working our way through details with police... You have to kind of sit there and go, 'National Party headquarters, three laptops gone - it does really trigger some suspicion, that's for sure."
A far-right extremist group targeted the office last week, accusing MP Jian Yang of being a spy for the Chinese government. The National Party didn't respond to Newshub's request for comment on that incident.
Police told Newshub they received a report of a burglary at an address on Great South Rd at 9:45am, just as Bennett's interview was starting. They will attend the scene on Monday.