Revelations that the two Bondi Beach shooters travelled to the Philippines, parts of which are notorious for Islamic extremism, just weeks before their murderous attack, open the door to the possibility that they may not be just lone fanatics.

While the nation mourns and outflanked authorities scramble to catch up, details emerging about Sunday evening’s massacre suggest failure at every level – federal, state, intelligence and law enforcement.

A Bondi lifeguard places flowers at the makeshift memorial for Bondi shooting victims on Tuesday.Credit: Jessica Hromas

Prime Minister Anthony Albanese said the advice he had received was that the father and son acted alone and “weren’t part of a wider cell”. But the discovery of........

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