Fiji's acting Prime Minister Aiyaz Sayed-Khaiyum has explained why government MPs were literally camped out in his office earlier this week — claiming they were attending a 48-hour strategic meeting.

It coincided with attempts by opposition parties who were attempting to serve an election petition on 27 FijiFirst MPs, as had been ordered by Fiji's Court of Disputed Returns

But the parties and their legal teams claim they were obstructed from doing so, with security not allowing them into the building in downtown Suva where the MPs were meeting.

SODELPA and the National Federation Party had filed the petition at the start of the week, and it includes claims of "unlawful conduct" by FijiFirst candidates and alleged "breaches by the Supervisor of Elections".

The mid-November poll was narrowly won by the FijiFirst party, with just over 50 per cent of the votes.

But what was to happen to the petition was under a cloud of doubt because they had been unable to personally serve it to all respondents.

The Attorney General Aiyaz Sayed-Khaiyum, who is currently Acting Prime Minister while Frank Bainimarama is overseas, said the FijiFirst MPs were attending a previously arranged meeting.

"Over the the past 2 days, we've been meeting for over 48 hours. It was a strategic meeting which was planned some weeks back to get the synergies involved, identify what we call the 'low-hanging fruits' in terms of what we can deliver, not just as a government but in terms of the economic input," he said.

Jope Tarai is a Fiji politics expert at the University of the South Pacific and said it had been a "peculiar" week.

He said the events have raised "a lot of scepticism and really a lot of questions from the general public, considering the timing [of the meeting]".

Fiji's Constitution requires the Court to make a decision within 21 days of the petition being filed, which means the decision must be made by December 31.

Mr Tarai said this week's events are being seen by some as "hide and seek" attempts by the government to "buy time".