Mr O'Neill told reporters Australian Prime Minister Tony Abbott has agreed to follow up on a deal made by his predecessor, Kevin Rudd, to send 50 to PNG hotspots.
The first 34 police will arrive in November, with 16 going to Morobe province, the area where two PNG porters were killed and Australian trekkers and local guides were wounded in a bandit attack on Tuesday.
"I want to confirm the first lot will arrive on November 4," Mr O'Neill told the Post Courier Newspaper on Friday.
"Sixteen or so out of that 50 will come in before Christmas."
He says the Australian government has pledged to fund up to 150 police officers.
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"This is a short term engagement and not a permanent arrangement," Mr O'Neill said.
"It will try to help us build up capacity and as I have said, we have shut down police training for (the past) ten years and it takes time to build capacity.
"I am certain we will get on top of the law and order problem in this country."
