Hundreds gather to lay flowers at the site of the deadly Bondi Beach shooting

People were seen laying flowers at a growing pile of floral tributes, while long lines formed at a Sydney blood centre after a call for donations.

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

Those killed included a 10-year-old girl, a rabbi and a Holocaust survivor.

Australian authorities declared the incident a terrorist attack. One gunman was fatally shot by police and the second arrested.