Source BBCA couple behind a suspected ambush in rural Australia, in which two police offers were killed, appear to have posted a video during the attacks, where they admitted to the killings.
The couple, along with Gareth's brother Nathaniel, were killed by police after shooting two officers and a neighbour.
Police are looking into the trio's links to conspiracy theories.
Officials said the suspects used "many weapons", but are yet to reveal what kind - or any motive for the attack.
https://www.bbc.co.uk/news/world-australia-63995470
It has parallels to the Dale Cregan murder of two police officers in Manchester, 2012, where he made the call and lay in wait for them to arrive.
https://www.bbc.co.uk/news/uk-england-19635239