Sharpie... In Friday's PosGuria, there was a letter to the editor from Leonard Louma, PM's Chief of Staff. In this letter, he confirms that the PM was on official, notified travel. He was met on arrival by Australian "close protection" and protocol officers, as well as PNG's Brisbane-based Consul General, who had given all the necessary prior notice of the trip.
So there is no excuse that they didn't know who he is.
While you're here, you might also want to read the "Joint Declaration of Principles", which was agreed a very long time ago between PNG and Australia.
To suggest that ANY Prime Minister or other type of national leader can be subjected to the same PUBLIC security checks as "Joe Blow" is pure fanciful poppycock. If that was the case, surely they would've done the same with the Indon PM, not to mention the Malaysian PM!
Get real mate. If the Security Manual says it's okay to do that, then the Security Manual is wrong. Simple as that. I might have to take a look at it from that pespective myself.