Former council planner Beth Morgan and developers Frank Vellar, Glen Tabak and Michael Kollaras are named in an ICAC public notice published in today's Mercury.

The notice announces a public inquiry, which will begin on Monday, February 18.

It states that ICAC is investigating "allegations that persons may have engaged in corrupt conduct" in connection with applications submitted by the developers and assessed by Ms Morgan and others.

It is also investigating council information Ms Morgan supplied to Mr Vellar, along with other dealings between Mr Vellar and council officers.

Two other men are named as part of the investigation - Ray Younan and Gerald Carroll.

ICAC is investigating activities of the pair and other persons dealing with them involving the "impersonation of ICAC officers, fraud, solicitation and payment of corrupt inducements and provision of false or misleading information to ICAC".

The public notice comes two days after new council general manager David Farmer confirmed the ICAC investigation, which he said related to "the development approval and plan-making process of Wollongong City Council in the past".

In December 2006, ICAC raided the council's offices and seized computer hard drives and personal organisers. Investigators shut down the development assessment and compliance department for hours.

In June 2007, Ms Morgan was suspended from the council and her contract subsequently terminated.

Mr Farmer said due to the confidential nature of ICAC investigations, his comments were the "first statement and probably last statement I'll be able to make until the hearings are over".

The ICAC investigation is the second involving the council in two years.

At the first, separate investigation, the commission recommended developer Lou Tasich be prosecuted for bribery offences after he was accused of offering a $30,000 bribe to commercial properties manager Peter Coyte. The commission cleared Mr Coyte of any wrongdoing.

The commission also recommended Mr Tasich be prosecuted for giving false or misleading evidence and failing to appear at the public inquiry without a reasonable excuse.

The commission criticised former CEO Rod Oxley after it was revealed it took him four weeks to report the incident.

It said Mr Oxley's conduct fell below the "standard expected of a principal officer of a public authority" but added that he did not wilfully disregard his duties.