New South Wales Government Minister Brad Hazzard has come under pressure in Parliament over his dealings with a witness to the car accident that sparked a corruption inquiry into Crown Prosecutor Margaret Cunneen.

Key points: Brad Hazzard confirmed a witness of the accident in Margaret Cunneen probe contacted him

Brad Hazzard confirmed a witness of the accident in Margaret Cunneen probe contacted him He said he put the witness in touch with ICAC, but could not recall providing Ms Cunneen's phone number

He said he put the witness in touch with ICAC, but could not recall providing Ms Cunneen's phone number The State Government's legal representative said Mr Hazzard has not done anything illegal

Under questioning from Labor, Mr Hazzard said a witness to the car accident contacted his office when he was attorney-general, after the Independent Commission Against Corruption (ICAC) announced it was investigating the incident.

The ICAC had announced a public inquiry into allegations Ms Cunneen advised her son's girlfriend to fake chest pains in the wake of the crash in order to delay a breath test.

Mr Hazzard told Parliament he put the witness in touch with the ICAC's counsel assisting but could not recall if he also gave her Ms Cunneen's phone number.

"But if I did, if I did, I think ... trying to assess this, it would have been a matter of the evidence being given to both sides so they could actually properly do the assessment," Mr Hazzard said.

Mr Hazzard, now the Family and Community Services Minister, was unapologetic about his actions.

"I don't recollect that, but you know what, I don't think it matters two hoots," Mr Hazzard said.

Opposition Leader Luke Foley then questioned the Premier Mike Baird about his minister's behaviour.

"Under what circumstances is it acceptable for one of your ministers to initiate private conversations with an eyewitness in a matter under active ICAC investigation?" Mr Foley asked.

Mr Baird refused to answer the question directly, telling the Opposition it could take its concerns to the corruption watchdog.

Crown Prosecutor Margaret Cunneen was the subject of an ill-fated ICAC investigation. ( AAP: Dan Himbrechts, file photo )

"It's very clear that matters that are alluded to in the question should be dealt with by ICAC," Mr Baird said.

The ICAC's inquiry into Ms Cunneen was ultimately killed off by the High Court's ruling that the corruption watchdog did not have the jurisdiction to investigate the matter.

But the fallout from the inquiry has sparked a bitter feud between the ICAC's Commissioner Megan Latham and the ICAC's inspector David Levine, who described the watchdog's investigation into Ms Cunneen as the "lowest point" in the organisation's history.

A parliamentary committee is currently considering whether to release secret Crime Commission recordings of a conversation Ms Cunneen had with a tow truck repairman in the wake of the crash.

'No possible illegality' in Hazzard's actions

A spokesman for Mr Baird said later that the General-Counsel in the Department of Premier and Cabinet, Paul Miller, had advised that there is no possible illegality in Mr Hazzard's actions.

"It is entirely appropriate that the Minister advised the person to contact the ICAC and also that he notified the ICAC of the contact directly," Mr Miller said in a statement.

"Having ensured that the ICAC was aware of the person's details and the information they had provided, I can see no possible illegality in the Minister's suggestion that the person also contact Ms Cunneen.

NSW Premier Mike Baird has not commented directly on Minister Brad Hazzard's involvement in the Margaret Cunneen case. ( AAP: Nikki Short )

"This is particularly so given that, as I understand it, the information was not adverse [and to the contrary was apparently favourable] to Ms Cunneen's defence."

Mr Hazzard also issued a statement, reiterating his defence of his actions.

"I recollect that the person wanted to give evidence that she felt would support Ms Cunneen and wanted to contact her," Mr Hazzard's said.

"I recollect referring her to ICAC and indeed I spoke to ICAC to ensure that contact between ICAC and the witness was made.

"I don't recollect whether I gave the witness the details of how to contact Ms Cunneen or her lawyers but if I did so, it would have been entirely appropriate to ensure that the witness could give both the ICAC and Ms Cunneen's lawyers her alleged observations."