Sri Lanka, Dec. 14 -- A bystander captured on video tackling and disarming an armed man during an attack in which 12 people were shot dead at a Jewish holiday event at Sydney's Bondi Beach on Sunday (Dec 14) has been hailed as a hero whose actions potentially saved lives.

Footage circulating on social media shows a man in a car park wearing a white shirt running up to a man in a dark shirt who is holding a rifle. He then tackles the armed man from behind, wrenching the rifle from him with his hands before pointing the gun back at the man.

The video then shows the man in a dark shirt losing his footing, backing away towards a bridge where another shooter was located, while the bystander places the gun down on the ground.

Reuters confirm...