In the first instance, the RCMP would provide the information for the humanitarian purpose; that is, to try to identify the missing person or to identify found human remains. If it goes into a criminal purpose, investigators wanting to pursue their criminal investigation, they would then, themselves, have to have the reasonable grounds to suspect. That would become part of their evidentiary package that would likely go to court and would be tested in court at that time.
On November 26th, 2014. See this statement in context.