When shots ran out at a Hanukkah celebration on Australia's Bondi Beach, Arsen Ostrovsky said he thought it could've been balloons popping.

Declared a terror attack by police, it is the deadliest in Australian history. Dozens were injured and 15 people - including a 10-year-old girl - were killed by the two gunmen, who police say were inspired by the jihadist group Islamic State (IS).

The father and son suspects in the Bondi Beach terror attack spent most of November in a hotel in the Philippines, but the reason for their visit remains unclear.

Mourners on Thursday laid to rest the youngest victim of the Bondi Beach attack in Sydney: 10-year-old Matilda, who had been enjoying the Hanukkah festivities with her family when the gunmen opened fire.

Ahmed al Ahmed, the Syrian-Australian father who wrestled a shotgun from one of the gunmen attacking a Jewish gathering, is facing a long road to recovery.

The gray arched footbridge, just a few meters from the grassy park where Jewish people gathered to celebrate Hanukkah last Sunday, gave the Bondi Beach gunmen an elevated vantage point over the crowd they attacked.

When a gunman murdered 35 people in Tasmania in 1996, Australia's political leaders united to implement some of the West's toughest gun laws. Nearly three decades later, after 15 people were killed at a Jewish festival at Bondi Beach,

Australian and Filipino authorities are investigating a recent trip to the southern Philippines by a father and son accused of gunning down 15 people at Sydney’s Bondi Beach.

The father and son, who authorities say were inspired by ISIS, spent nearly a month holed up in a budget hotel in an area of the country that has been seen as a hot spot for extremism.