A former detective, Peter Thomas, risks prosecution for evidence he gave at the judicial inquiry into the conviction of Roseanne Catt, a judge warned yesterday.

Acting Justice Thomas Davidson told Mr Thomas that depending on the view taken of his evidence by the Director of Public Prosecutions, he could be "in jeopardy" of prosecution for evidence he gave the inquiry on Monday.

In 1991 Catt received 12 years for attempting to poison, threatening to kill, stabbing and assaulting her husband, Barry. Mr Thomas ran the investigation but later left the police.

Catt was released on bail last year after the NSW Attorney-General ordered an inquiry into allegations she was framed.

Mr Thomas was asked yesterday whether he had discussed the case with journalists. On Monday he said: "No I have not." Yesterday, he admitted meeting a journalist.

A police officer assisting the Crown, Darren Boyd-Skinner, has given a statement to the court. Mr Thomas was questioned over it yesterday. He either could not recall events, gave contradictory evidence or denied certain facts alleged.

A lawyer for Mr Thomas will be allowed to question Detective Boyd-Skinner, due to give evidence today.

Originally published in the Sydney Morning Herald.