Ipswich City Council's crisis is set to deepen further after Queensland's Crime and Corruption Commission revealed more charges will be laid from their long- running investigations into the council.

Councillors have 21 days to show cause to the state government why they should not be dismissed after the CCC this week charged their second mayor in less than 12 months.

CCC chairman Alan MacSporran, QC, says more charges could yet be laid. Credit:Darren England/AAP

CCC chairman Alan MacSporran said on Friday the investigation was winding up but more offences had been uncovered.

"I think you can expect more charges," he told reporters.