Hundreds of members of Papua New Guinea's police and security forces have stormed the parliament building in Port Moresby, leaving a trail of destruction.

Key points: There were reports of looting and rioting in Port Moresby

There were reports of looting and rioting in Port Moresby Media was blocked from filming by police and army officers

Media was blocked from filming by police and army officers Several MP's told the ABC they locked themselves in their offices for safety

The ABC understands the group are angry about not receiving allowances owed to them from working at APEC, which concluded on the weekend.

Windows were broken, pictures were pulled from the wall, pot plants were pushed over and some security systems were destroyed.

There were also reports of looting and rioting in parts of the city, with footage sighted by the ABC showing people running in the streets.

A screenshot from a video showing the chaos in Port Moresby. ( Supplied )

Vehicles were turned around in the street and media attempting to film were threatened by police.

Approximately 10 police vehicles were outside Parliament, and about five were visible in front of the building.

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"What I know is that members of the disciplinary force have congregated and are at Parliament — some of them, not all of them," acting commissioner for PNG's correctional service Stephen Pokanis said.

"It's to do with complaints over their allowance."

When he spoke to the ABC by phone, Mr Pokanis said he was not at Parliament, but was travelling there to assess the situation.

"They are demanding to be paid now, that's why they are at Parliament House," he said.

The ABC spoke to several MPs who were inside the building, some of whom said they were locked in their offices for safety.

Australia's Department of Foreign Affairs and Trade (DFAT) said they were monitoring the situation in Port Moresby.

The Governor of Port Moresby, Powes Parkop, said the unrest is now under control and the grievances that saw security personnel storm the Parliament are being resolved.

Soldiers are guarding the building overnight.

Police cars seen outside the Parliament building after the APEC summit. ( Facebook: Allan Bird )

An issue 'built up way before this incident'

"We heard from outside that there was a commotion, and glasses were being broken, furniture smashed," Opposition MP Bryan Kramer told the ABC from inside Parliament.

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Mr Kramer said he did not know the specific details of what the police officers wanted to be compensated for, but that he had received reports in the lead-up to APEC that a, "significant amount of the police force were raising concerns over the manner in which the Government had organised APEC".

He said security forces were flown around the country to work at the summit, but sufficient accommodation was not provided, and, without allowances, they were struggling to sustain themselves in Port Moresby.

"It appears that this isn't just an issue today, this is something that has built up way before this incident, before APEC and during APEC," Mr Kramer said.

"I can only assume that they allowed APEC to go past without expressing their frustrations, and once APEC has concluded, this is the basis of their frustrations."

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Gary Juffa, an Opposition MP and Governor for the Northern Province, said the Discipline Forces demanded the Police Minister and Prime Minister address them and tell them what's going on.

A meeting is currently underway inside Parliament between Prime Minister Peter O'Neill, Police Commissioner Gari Baki, APEC Minister Justin Tkatchenko, the Attorney-General and others.

Some members of the media were escorted in the building and told to wait outside the meeting room and not film anything.

APEC CEO Chris Hawkins responded in a statement.

"The payment of allowances for police, CS and defence normally take a week to process at the end of a major event," he said.

"The meeting ended two days ago and the security operation is now winding down.

"The payment of individual allowances has already commenced and individual security force members should check with their banks as payments are made."