Man charged with threatening Jewish community on flight

A man who allegedly threatened a member of the Jewish community while fleeing Bali has been arrested.

The 19-year-old from Sydney is accused of making anti-Semitic threats and making violent gestures towards another person he knew was part of the Jewish community.

Australian Federal Police officers arrested the man after he landed at Sydney International Airport on Wednesday and charged him with using force or threats of violence against members of the group.

The man, who was refused bail, is expected to appear in the NSW Local Bail Division Court on Thursday.

Law enforcement is on alert for anti-Semitic incidents following a terrorist attack at a Hanukkah event at Bondi Beach.

As hundreds of people gathered for the Jewish festival of lights, gunmen opened fire, killing 15 people and wounding many others.

Pressure increased on governments and law enforcement in the wake of the mass attack, with many criticizing police for not acting more quickly.

While responding to the attack, two police officers, including a police officer who had been on duty for four months, were seriously injured.

NSW police arrested a man on Tuesday and charged him with allegedly carrying a Nazi symbol on a boat in the Lake Macquarie area.

Sydney and Melbourne have suffered numerous anti-Semitic attacks in recent years; Synagogues and other Jewish community venues were sprayed with offensive graffiti or firebombed.

The Australian Security Intelligence Agency found that Iran carried out at least two of the anti-Semitic attacks on a Jewish kosher deli in Bondi and the Adass Israel Synagogue in Melbourne.