"Truly disgusting" online comments calling for "Christchurch again" have been condemned as Australia's Islamic community demands greater protection.
Lakemba Mosque in Sydney's west was the latest targeted by online comments invoking an Australian man's terrorist attack in New Zealand in which 51 worshippers were murdered during prayers.
The reference to the 2019 attack in Christchurch was posted on a video Lakemba Mosque shared on TikTok showing worshippers leaving during Ramadan.
"Enough is enough," the mosque said on Thursday.
"This is not just online hate - we have seen where unchecked racism leads," it said in a Facebook post.
"We will not wait for another tragedy before action is taken.
"We demand protection, respect, and the right to live without fear in our own country."
The call for greater protection comes amid fierce debate about laws rushed through New South Wales parliament in February to criminalise hate speech on the grounds of race.
The changes were introduced after a spate of attacks targeting Jewish sites and communities and the discovery of a bomb-laded caravan on Sydney's outskirts in an apparent anti-Semitic plot.
Many of those incidents including the caravan find have since been revealed by investigators to have been orchestrated by organised criminals to further their ends, rather than for ideological reasons.
The laws have been criticised for singling out race-based hate speech but failing to extend the same protections to religious communities.
NSW Premier Chris Minns condemned the reported threat as "truly disgusting".
"This racism and Islamophobia has absolutely no place in NSW," he said.
"The NSW Police Force have launched an urgent investigation into this threat and those responsible will face the full force of the law."
Multiculturalism Minister Steve Kamper said the government was taking it seriously and the community would be supported to feel protected and safe.
"To invoke the horrific tragedy of the Christchurch terror attack is unconscionable and despicable," he said.
"No matter your ethnicity, religion, or country of birth, we are all bound - first and foremost - by our common commitment to each other as Australians," he said.
The threat came after a Western Australian teenager was charged with creating false apprehension to the existence of threats or danger after similarly invoking a repeat of the Christchurch attack in a comment on a mosque's social media page earlier in March.
