geneva unite nations refugee agency call calm thursday receive report force use remove refugees asylum-seekers center close three weeks ago manus island papua new guinea fifty asylum seekers depart australian-run detention camp papua new guinea thursday police move complex confiscate food water personal belong roughly 310 remain nl8n1ns6kk urge governments engage constructive dialogue de-escalate tensions work urgent last solutions plight u.n. high commission refugees unhcr say statement could confirm force use grant full access shutter facility u.n. urge australia protect refugees papua new guinea camp