Jaruwan, who chairs the panel probing alleged corruption in the purchase of underground electric cables for Suvarnabhumi Airport, said the evidence received related not only to the purchase of the cable system but other corruption allegations also.

"The evidence shows a link between a group of people [involved in the corruption allegations]," she said.

Jaruwan said she would wrap up the inquiry into the underground cabling after the New Year holiday.

"It should not be a surprise. The Office of the Auditor-General (OAG) had resolved the corruption case before I was suspended. The National Counter Corruption Commission (NCCC) had already obtained the investigation file for this case, which clearly implicated certain suspects,'' she said.

But she admitted the Asset Examination Commission (AEC) had faced difficulties in accessing confidential public information. She has been using the authority of the OAG to access information required from state agencies.

She said that once the AEC was dissolved, there was no need for another investigation body. Probes into alleged corruption should rest with the OAG and NCCC.

This year, she said, the OAG would look into use of the chief executive officers' budget by provincial governors. 

Other corruption allegations the OAG will scrutinise include the collection of revenues from local administrative organisations, the use of land belonging to the State Railway of Thailand and the Smart Card project.

"We are checking how the concerned agencies bought the cards at a much cheaper price," she said.