Warnings are a matter of everyday life for the police, so it's surprising to consider the highest levels of the force seemingly failed to heed them over the Wally Haumaha affair.
The appointment of Haumaha to Deputy Commissioner has kindled into conflagration as questions are asked about how much was known, and by whom, before the promotion was made.
The inquiry into the Haumaha appointment chaired by Dr Pauline Kingi will do the important work of "examining, identifying and reporting on the adequacy of the process". Under the terms of reference, the Kingi inquiry will focus on the role of the State Services Commission but "may consider other matters that come to its notice in the course of its inquiries".
That's well and good, but it's already evident thanks to the work of investigative journalists Jared Savage and Phil Kitchin that warnings on Haumaha were there.
It seems Police Commissioner Mike Bush was warned at some stage about Haumaha's connections with the disgraced officers at the centre of the rape allegations which led to a Commission of Inquiry in 2004 and Dame Margaret Bazley's damning report in 2007 - though we don't know exactly what form that warning took.