WA top cop weighs in on selection process

Western Australia's outgoing police commissioner says it would be a shame if the public did not have confidence in the process for selecting a new chief.

Former Australian Federal Police commissioner Mick Keelty recently withdrew from the selection committee, citing unavailability for interviews due to overseas travel, and there were also claims of political interference, which the Labor government denied.

Karl O'Callaghan, who will leave the job in August after 13 years, refused to comment on the controversies, saying he wasn't involved in the process.

The number of interviewees have also increased from six to 10.

"The only thing that I might say is that it would be a shame if the public didn't have confidence in the process and it would also be a burden for the incoming commissioner because there would be a perception," he told reporters.