On this very point, I think it's important to note that as we conduct our verification at the port of entry through biometric record checks, if there are concerns around the identity of the individual who presents, that person will likely be detained until that ambiguity can be resolved. In the process of reviewing the claim as such, it is suspended until we're satisfied that we know who the person is and what the history of that person is.
On September 28th, 2017. See this statement in context.