It was scarcely more than 48 hours after the tragic attack in Bondi Junction when across town in Sydney, another confronting incident was unfolding.

During a service that was livestreamed at Christ The Good Shepherd Church in the suburb of Wakeley, a teenager allegedly attacked Bishop Mar Mari Emmanuel.

The attack, which has now been declared an act of terror, sparked chaotic and violent scenes outside the church, where hundreds of people rioted and clashed with a heavy police presence.

Today, investigative reporter Patrick Begley on what we know about the attack and the trauma and fear felt across Sydney.