Three more people will be medivaced to Port Moresby for treatment after riots in which one man was killed and 77 asylum seekers were injured at a detention centre on Manus Island.
The man who died suffered head injuries overnight outside the detention centre where security is the domain of PNG police.
Immigration Minister Scott Morrison says there is no suggestion PNG police shot at the asylum seekers, although he understood they fired shots on two occasions, at 11.20pm (PNG time) on Monday and 1am on Tuesday before order was restored.
"At this stage there were two occasions where our authorities reported back to us that shots were heard or reported to be fired by PNG police," Mr Morrison told reporters in Canberra.
"But that in no way suggests in any way that those shots were fired at any individuals."
Mr Morrison said a man with a skull fracture had been transferred to an Australian hospital for treatment.
"I am not about to disclose his location because I don't think that's going to assist with his treatment," he said.
A man who was shot in the buttocks has been transferred to Port Moresby for treatment and three more injured men will follow.
Mr Morrison said most of the 77 injured suffered head injuries, with 12 still in a serious condition.
He said detention centre security guards were not armed with guns.
The minister said PNG Prime Minister Peter O'Neill had promised a thorough investigation.
