Liberal frontbencher Michaelia Cash has been ordered to make a five-minute statement to the Senate concerning leaks from her office about raids on union offices.
The Senate voted 35-27 on Wednesday to order her to make the statement before question time at 2pm on Thursday.
It comes after her former media adviser David de Garis admitted in Federal Court damaging Labor leader Bill Shorten partly motivated him to tip-off media about the raids on Australian Workers' Union headquarters in 2017.
Pauline Hanson and her One Nation colleague Peter Georgiou were among the crossbench supporters of the motion forcing Senator Cash to make a statement to the upper house.
The motion noted Senator Cash had previously told a Senate hearing Mr de Garis got information from a "media source".
But he told the court the minister's then-chief-of-staff Ben Davies was the source of his knowledge of the leaks.
The motion calls on her to "correct the record" over the incident.
In question time on Wednesday, Senator Cash said she would not comment on the case while it was before the court.
She has consistently denied any knowledge of the raids or leaks from her staff to journalists.
Senator Cash is due to give evidence in court on Friday, once federal parliament has finished sitting for the week.
