Not sure if really a surge. Border and reception center personnel were quoted that we have the capacity for processing and accomodation, and the capability for quick changes if needed.
And as the incoming numbers dwindled down, the cabinet started this show. Their voters are xenophobic and the cabinet support was down in the polls as they are running different parts of the society down and making workers’ life harder.
The cabinet is also known for a combo of parties with Russian oligarch connections and fandom towards putin-style accelerationism strongman totalitarianism.
The official reason is national security and classified intelligence so nothing is told to the public. The Immigration Office, whose responsibility asylum seekers are, has said to the press that there no evidence that those who’ve passed over would be war criminals or military disguised as civilians.
Edit: changed out the anti-immigration description, while true, is not relevant in this case.