Sydney Councillor and Indigenous community leader Yvonne Weldon AM has expressed grief and shock after the Bondi terror attack, and urged solidarity and support for Australia's Jewish community.

Councillor Weldon, who was the first Aboriginal person to be elected to the City's council in its 180-year history, spoke out on Monday after two gunman attacked a Hanukkah celebration on Sunday evening.

"My heart breaks for the victims, their families, and all impacted by the horrific attack in Bondi last night," she said.

"The attack targeted those attending a Hanukkah celebration; a senseless act driven by unimaginable hate.

"It has left an indelible mark of grief and fear on the entire community, but particularly the Jewish community."

Councillor Weldon said, noting Premier Chris Minns' comments, "it is the responsibility of all Australians to wrap our arms around the Jewish community".

"We must stand together and care for each other in the days ahead," she said.

NSW Police commissioner Mal Lanyon told reporters on Sunday one of the assailants was killed at the scene and the other is in custody.

"The offenders are a 50-year-old and 24-year-old male, who are father and son. The 50-year-old is deceased," he said.

The two terrorists killed 15 innocent people, including a ten-year-old child, and injured 42 more.

Local fruit shop owner, Ahmed Al Ahmed, has been hailed as a hero after ripping the gun from the hands of one of the terrorists before he was shot at least twice by the other shooter from a nearby bridge

Mr Al Ahmed, a 43-year-old father of two from the Sutherland Shire, remains in hospital after undergoing surgery, and is expected to have further surgeries.