Hundreds had gathered for an event at Bondi Beach called Chanukah by the Sea, which was celebrating the start of the Hanukkah Jewish festival.

SYDNEY, Dec 15 (Reuters) - Australia vowed stricter gun laws on Monday as it began mourning victims of its worst mass shooting in almost 30 years, in which police accused a father-and-son duo of killing 15 people at a Jewish celebration at Sydney's famed Bondi Beach.

The mass shooting, labeled a terrorist attack by authorities, has sent shockwaves through Jewish communities worldwide — including here in Georgia, Sen. Jon Ossoff says.

Two medical professionals who live near Bondi Beach, where gunmen attacked a Hanukkah festival on Sunday, described a harrowing scene.

Two gunmen opened fire during a Hanukkah celebration on Sydney's Bondi beach, killing 15 people, including a child, officials said Monday, in what Prime Minister Anthony Albanese called an act of antisemitic terrorism that struck at the heart of the nation.

New South Wales Premier Chris Minns on Sunday praised the man's actions, calling it "the most unbelievable scene."

At least 38 people were being treated in hospitals after the massacre on Sunday, when the two shooters fired indiscriminately on the beachfront festivities.

A man who was filmed tackling and disarming an armed attacker during a deadly shooting at a Hanukkah celebration on Sydney’s Bondi Beach on Sunday has been hailed as a hero and widely praised, with authorities and world leaders crediting his actions with potentially saving lives.