Slater is already facing five charges relating to breaching suppression orders, identifying two prominent New Zealanders accused in separate sex offence cases.
Police are investigating him again after he posted a coded message naming a person given suppression by Nelson District Courts while on bail.
Such action in defiance of a court order was irresponsible and could lead to the identification of the victim the order was intended to protect, Nelson Bays police area commander Detective Inspector John Winter said.
Mr Collins said he supported the action police had already taken and invited them to determine whether to charge Slater over the Nelson case.
Contempt proceedings remained an option, he said.
Such proceedings would likely be brought if Slater's offending escalated or if it was on-going after criminal prosecutions had been disposed of, Mr Collins said.
