"To date, the AFP has taken witness statements from 14 people," the AFP said in response to a Question on Notice from Labor senator Murray Watt in February.

"34 additional witnesses have been spoken with and provided information to investigators."

That brings to 48 the total number of people the AFP has spoken to as part of its ongoing investigation — launched on October 25, the day after the search warrants were executed.

The AFP will not reveal the identities of those it has spoken to, saying that releasing specific information "would compromise the investigation".

However, it has confirmed it is in contact with job minister Michaelia Cash's department.

"The AFP has been in contact with the Department of Jobs and Small Business (previously known as the Department of Employment), which has assisted with the AFP investigation," it said.



