Botany MP Jami-Lee Ross has gone to ground after the Serious Fraud Office announced on Wednesday it was charging four people in relation to the National Party donations scandal.

National leader Simon Bridges said neither himself, or anyone from the party had been charged.

Stuff attempted to contact Ross on Wednesday and Thursday for comment and visited both his Botany electorate office, which was closed, and his East Tamaki Heights home - to no avail.

ROSS GIBLIN/STUFF At the time, National Party leader Simon Bridges said the leaked tape exonerated not him, but Jami-Lee Ross.

But he did appear briefly when two news crews approached his home, only to run back inside.

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The complaint over party donations was referred to the Serious Fraud Office by police in March last year.

Stuff While the media pack waited outside the National Party corridor for the caucus to meet just before 11am, Ross sent a text message to several political editors - and a quick tweet - announcing he would hold a press conference in 10 minutes.

The original complaint was filed by the former National MP in October 2018. Ross claimed Bridges had asked him to split up $100,000 from a Chinese donor to avoid breaching the Electoral Act. Under the legislation political parties must disclose donations over $15,000.

Ross gave police a secretly recorded conversation between himself and Bridges where they discussed the donation as part of his complaint.