Seven ministers, including Deputy Prime Minister Manasseh Maelanga, tendered their resignation on Saturday.
Among the defectors were also former prime ministers Danny Phillip and Snyder Rini, lending weight to reports that a new group is forming to change government.
The group is basing its lobbying at the Honiara Hotel, and was yesterday joined by more ministers and government backbenchers.
They claim the current government, called the Democratic Coalition for Change, has lost trust and confidence in the leadership of Mr Sogavare.
