The Solomon Islands' political crisis has appeared to have deepened further amid accusations Prime Minister Jeremiah Manele is attempting to bribe his way into retaining power.

A coalition of parties who oppose the Prime Minister have alleged government lobbyists are offering rival MPs "huge money" in what they say is a blatant attempt to "buy political allegiance".

The accusations come amid an ongoing court battle over questionable parliamentary ethics to avoid opposition moves to oust Mr Manele from office.

The opposition coalition, which

Claiming to have 28 of the country's 50 MPs since the recent defection of 12 former ministers, the opposition say they have records of communications from lobbyists.

The messages have allegedly promised "millions of dollars" to any five opposition MPs willing to cross the floor and join the government to consolidate the Prime Minister's power.

"We have text messages and recorded voice messages from government lobbyists offering (us) huge money," the opposition MPs said in a joint statement.

The alleged bribe has reportedly increased from thousands to millions of Solomon Islands dollars — worth nearly six times that of Australia's currency — to sit with the Ownership, Unity and Responsibility party in parliament.

The latest attempt at the weekend involved an offer "in the millions", the opposition MPs said in the statement.

Radio New Zealand was shown screenshots of text messages, purportedly sent by Mr Manele's staff, targeting certain MPs with offers equivalent to $A5,213 ($SBD30,000).

The opposition MPs say they plan to provide evidence of the alleged monetary inducements to the authorities for an investigation.

In a statement the Solomon Islands Prime Minister's Office said Mr Manele "will not respond to the allegations".

Mr Manele was waiting to hear from the Court of Appeal on whether he will be forced to call parliament back to face a motion of no confidence.

The court had previously ordered parliament to convene by Friday of last week.

Mr Manele was absent from the Solomon Islands due to his role as the Pacific Islands Forum chairman during its Troika meeting held in Fiji.

Attorney-General John Muria asked the Court of Appeal on Wednesday to set aside last week's High Court ruling which ordered the Prime Minister to convene parliament within three days.

The Solomon Islands' Governor-General also refused to recall parliament within three days.

The action follows Mr Muria's earlier attempts to ask Chief Albert Palmer to strike out the case from the opposition to unseat the Ownership, Unity and Responsibility-led government.

Mr Manele, who previously served as the Solomons' foreign minister, was first elected to lead the country on May 2, 2024.

He survived a motion of no confidence in April 2025 after six ministers and five backbenchers walked away.

A number of MPs of the People First Party — one of Mr Manele's government partners in the National Unity and Transformation coalition — resigned earlier this month to cross the floor and rock the stability of the Melanesian country's politics.

For more than a month, Mr Manele has resisted calls to resign amid maintaining he has a right to continue governing. Opposition MPs challenge the claim, arguing his decision to hold on to power is largely unconstitutional.