Tasmanian Senator Nick McKim says he's being kicked out of Papua New Guinea.
He's taken to Twitter to reveal he'll be deported today after having his passport seized.
Authorities apparently swooped this morning after he was denied permission to enter a Manus Island asylum seeker facility.
"I was granted a 12 month multiple entry visa by the PNG government and am here legally," he said on Twitter.
"Every kina spent here on refugees has been authorised by the Australian parliament, and there should be accountability on how it is spent. That accountability and truth telling is my job."
Senator McKim is visiting Manus Island to mark six years since the Rudd government reintroduced offshore detention for asylum seekers who arrived by boat.
"I have always treated police, immigration and all PNG people with respect, and obeyed their laws," he said.
"Offshore detention is not of their making, and has been very difficult for many of them."
Around 450 asylum seekers remain in PNG and another 350 are being held on Nauru.