Australian police said on Monday that the alleged offenders behind an attack at a Jewish celebration in Sydney's Bondi Beach that killed 15 people were a father and son duo. One of the gunmen was also killed, bringing the death toll to 16.

It was the country's worst gun attack in about 30 years.

The father, a 50-year-old, was killed at the scene while his 24-year-old son was in critical condition in the hospital, the police said in the press conference on Monday.

Witnesses said the shooting at the famed beach, which was packed on a hot evening, lasted about 10 minutes, sending hundreds of people scattering along the sand and into nearby streets and parks. Police said around 1,000 people had attended the Hanukkah event.

Police said that 40 people remain in hospital following the attack,

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