A man has been arrested after allegedly issuing a spray of antisemitic threats on a flight from Bali.

The 19-year-old from Sydney has been accused of making the threats and gesturing in a way that indicated violence towards another person, who he knew was part of the Jewish community.

Australian Federal Police officers arrested the man after the plane landed in Sydney on Wednesday.

He has been charged with threatening force or violence against members of groups. He was refused bail and will appear at NSW Local Bail Division Court on Thursday.

The offence carries a maximum penalty of five years’ imprisonment.

Law enforcement has been on alert for antisemitic incidents following Sunday’s deadly terror attack at the Hanukkah event on Bondi Beach.

Gunmen opened fire as hundreds gathered for the Jewish festival of lights, killing 15 people and injuring scores more.

One of the gunmen, 50-year-old Sajid Akram, was killed in a shootout with police. His son, Naveed Akram, 24, faces 59 charges, including 15 of murder.

Following the mass shooting, pressure has mounted on governments and law enforcement, with many criticising the police for not acting more quickly.

Two officers, including a probationary constable who had been in the job for four months, were seriously injured while responding to the attack.

On Tuesday, NSW police arrested a man and charged him for allegedly displaying a Nazi symbol on a boat in the Lake Macquarie area.

There have been a spate of antisemitic attacks in Sydney and Melbourne in recent years, with synagogues and other Jewish community spaces sprayed with offensive graffiti or firebombed.

The Australian Security Intelligence Organisation found Iran had orchestrated at least two of the antisemitic attacks – on a Jewish kosher deli in Bondi and the Adass Israel Synagogue in Melbourne.

-with AAP