Transparency International Papua New Guinea says questions remain over a suspicious land deal involving at least two government ministers.
The deal involved acquisition of land at Manumanu in Central Province for a naval base.
Two ministers, Fabian Pok and William Duma, were alleged to have conspired over the acquisition prior to the sale of the land.
The state paid a company linked with Mr Duma $US14million to purchase the land at Manumanu.
When the deal came to public attention in March, prime minister Peter O'Neill stood down the ministers, and announced an inquiry.
Both MPs have now been re-appointed as ministers, but according to Transparency's Lawrence Stephens, no inquiry appears to have occurred.