Australia police Periscope 'plans to arrest N Korean agent' Published duration 19 December 2017

image copyright AUSTRALIAN FEDERAL POLICE image caption Police say Mr Choi had contact with "high level" North Koreans

Australian police are conducting a security review after an office conversation, reportedly about plans to arrest a suspected North Korean agent, was broadcast live online.

The Australian Federal Police (AFP) have not commented on the content of the conversation, which was streamed live on Periscope.

But the West Australian newspaper said it was clearly about the operation to arrest Chan Han Hoi last weekend.

The paper said it had alerted police.

Police believe he had been in contact with "high ranking officials in North Korea".

The Federal Police confirmed to the BBC only that "part of an office conversation was accidently broadcast via the AFP's Periscope account" on 13 December.

A spokesperson said this happened when a piece of "social media broadcasting equipment" was being tested.

The tweet was quickly deleted, but a minute-long Periscope recording remained online until the paper alerted police. It said about 40 people had heard the broadcast.

image caption Periscope allows users to livestream videos from their phone

The paper said that while the identity of the suspect was not revealed, voices could be heard discussing plans for the arrest and the possible need to inform Prime Minister Malcolm Turnbull and opposition leader Bill Shorten.

One voice said police are "not going in all guns blazing, it's only half-a-dozen people and a forensic van", it reported.

The AFP said the issue had been referred to its security teams for review, and that it was making no further comment.

"Steps have been taken to ensure such incidents will not occur again," said the spokesperson.

Mr Choi was born in South Korea but lived in Australia for more than 30 years and was a naturalised citizen.