Former Ipswich mayor Paul Pisasale is facing three charges, including one count of extortion, after he was arrested by the Crime and Corruption Commission.

The 65-year-old is due to front the Brisbane Magistrates Court on Wednesday morning after being remanded in custody overnight.

Earlier, a CCC spokesman said the charges had "nothing to do with the fifty grand" found on Mr Pisasale at Melbourne airport on May 12 or Operation Belcarra, the organisation's investigation into the 2016 local elections.

Asked whether anyone else could become the subject of CCC action, the spokesman said: "I can't say at this stage. The investigation remains ongoing."