 Originally estimated to cost  million, the final cost was over $400 million.In 2007, the Rudd government decommissioned Manus Regional Processing Centre and Nauru detention centre; processing would then occur on Christmas Island itself.In December 2010, 48 asylum-seekers died just off the coast of the island in what became known as the Christmas Island boat disaster when their boat hit the rocks near Flying Fish Cove, and then smashed against nearby cliffs.