SENATOR Derryn Hinch promised a ‘bombshell’ announcement today regarding a One Nation staffer, but as the day ends, he’s left us hanging.

The outspoken Victorian Senator went on radio in Melbourne today to tease an impending announcement regarding Pauline Hanson’s political party.

Speculation mounted that the announcement concerned Senator Hanson’s controversial chief of staff James Ashby.

Senator Hinch told 3AW’s Neil Mitchell that a “bombshell” would be dropped today, but was cagey on the details, simply saying it involved “a staffer, not a senator”.

When specifically asked if it was regarding Mr Ashby, Senator Hinch said “no comment”.

Around 5pm AEST, Senator Hinch released a statement clarifying his earlier remarks, saying his tip came from a “usually reliable” source.

He said the Neil Mitchell program received a similar tip.

“Like this morning, we await developments,” he said, and denied reports he was going to raise the matter in the Senate during the adjournment debate on Tuesday night.

media_camera One Nation leader Senator Pauline Hanson and her right-hand man James Ashby. Picture: AAP

Senator Hanson and Mr Ashby have been in the spotlight for several weeks, after a Four Corners investigation into alleged electoral financing irregularities.

Attention has been focused on donations received by the right wing party, and in particular a private plane Senator Hanson has used for travel.

Mr Ashby, who pilots the aircraft, insisted he was the owner.

RELATED: Ashby suggested apparent plan to make money off One Nation candidates

media_camera The plane at the centre of allegations surrounding One Nation’s electoral donations. Picture: Supplied

One Natiion is yet to comment and Ashby shrugged off speculation when he spoke to reporters after having lunch at Parliament House.

“I’ve heard I’m getting sacked today,” he said.

Asked about Senator Hinch’s comments, he said: “I’m unaware. I have heard Senator Hinch has had some comments, I’m unsure what it’s about.”