On Tuesday morning, Supreme Court judge Donald McIntosh granted leave for the DPP to go to the Judicial Review Court to challenge the order for her to testify.

The case was also granted a stay by Justice McIntosh, pending the result of the hearing.

A date for the hearing is yet to be set.

Last month, Senior Resident Magistrate Judith Pusey granted an application by the defence for the DPP to be called as a witness in the light-bulb matter, but ordered that Llewellyn stay out of the courtroom while prosecution witness, Rodney Chin, gives evidence.

Chin is the main prosecution witness in the corruption and money - laundering trial of former junior energy minister, Kern Spencer, and his co-accused, Colleen Wright.

The DPP, who is seeking an order to quash Pusey's ruling for her to be absent from the courtroom while Chin is testifying, has consistently challenged Pusey's ruling on the grounds that the issuing of the subpoena for her to be called as a witness is an abuse of the process of the court.