One of those who came to leave flowers is the country's Prime Minister Anthony Albanese.
"What happened yesterday is an act of pure evil, an act of anti-Semitism, an act of terrorism in our country at an iconic Australian location," he said during a press conference on Monday, according to AFP.
Flowers have also been left outside a synagogue near Bondi Beach, says TT's correspondent at the scene.
Authorities around the world have expressed their horror at the act, which has been described as anti-Semitic.
The United States "strongly condemns the terrorist attack," Secretary of State Marco Rubio wrote on X, calling it "horrific."
"Europe stands with Australia and the Jewish population everywhere. We are united against violence, anti-Semitism and hatred," writes European Commission President Ursula von der Leyen on X.
UN Secretary-General António Guterres calls the attack "heinous" in a post on X and writes that his heart is with the Jewish population.
