The Fiji government has handed the official letter of expulsion to Acting Australian High Commissioner to Fiji, Sarah Roberts.

The Australian High Commission is yet to comment however the ABC News reports that the letter has been received by Roberts.

Roberts is expected to leave the country within 24 hours after she was declared persona non-grata by Fiji late last night.

She is the second Australian diplomat to be expelled.

Speaking from Korea, Commodore Voreqe Bainimarama said the action had to be taken and he said he knows that this will not result in any improvement to the relationship between Australia and Fiji.