A bystander who wrestled a gun from one of the alleged attackers during a mass shooting at Bondi Beach has been identified as Ahmed al Ahmed, whose refugee parents had just arrived from Syria, according to Australian officials and media.

One of two men suspected of carrying out Australia's deadliest mass shooting in three decades will be charged later on Wednesday, Prime Minister Anthony Albanese said, as the funerals of the Jewish victims of Sunday's attack began.

Australia's Prime Minister Anthony Albanese said that the terror attack on Jewish people at Bondi Beach was "motivated by ISIS ideology."

Dash cam footage has emerged of Boris and Sofia Gurman trying to disarm one of the suspected attackers. The couple were killed, but their bravery was lauded by Australians.

Hundreds of mourners gathered in a Bondi synagogue for the funeral of Rabbi Eli Schlanger on Wednesday, a few blocks away from the beach where he was gunned down, one of the first of many services for the Hanukkah festival shooting victims.

The suspected gunmen who attacked a Jewish gathering on Bondi Beach were of Indian heritage and inspired by ISIS, officials say.