Queensland's Crime and Corruption Commission announced that suspended Logan mayor Luke Smith and seven Logan councillors would be charged on Friday after a prolonged investigation into the south-east Queensland council.

The major corruption investigation began in November 2017 after evidence about Logan City Council was uncovered during Operation Belcarra, the CCC investigation into several south-east Queensland councils.

Suspended Logan mayor Luke Smith. Credit:Robert Shakespeare

Cr Smith had already been charged with official corruption, perjury and failure to update his register of interests.

He was expected to be charged on Friday for allegedly interfering in a recruitment process and commencing a dishonest probation process.