An ugly brawl between members of rival protest groups at Australia's best-known beach over Gaza is being investigated by police.

The clash between the pro-Palestinian and pro-Israel supporters broke out on Sunday morning at Bondi Beach.

Hundreds of pro-Palestine supporters were gathering on the beach on Father's Day for a paddle-out in support of the fathers of Gaza.

The event was organised by Jews against the Occupation, a Jewish-led pro-Palestine group. who called on local boardriders to take part in the "peaceful event".

A counter-protest was held at the same time.

"During the assembly, members from different groups became involved in a brawl, with police intervening," NSW Police said in a statement on Tuesday.

Amid concerns about community safety, local police were called in to m

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