Man accused of praising Bondi attack had multiple guns

Officers raided Glynn's Yangebup home on Tuesday where they seized several firearms, large quantities of ammunition and flags linked to banned terrorist organisations Hezbollah and Hamas.

Glynn appeared before Fremantle Magistrates Court on Wednesday to face charges of conduct intended to racially harass, carrying or possessing a prohibited weapon, and failing to properly store a firearm.

He appeared without legal representation and was remanded in custody ahead of his next court appearance in February.

Glynn allegedly posted on social media in the hours following the December 14 terror attack at Bondi Beach, where 15 people were killed after a father-son duo opened fire on a crowd of Jewish faithful celebrating Hanukkah. 

"It is appalling that, in the wake of Bondi, anyone would say anything that supports, in any way the actions of a horrific, vile, criminal terrorist act," WA Police Minister Reece Whitby told reporters on Wednesday.

"Words are dangerous. Words have potential to lead to catastrophic outcomes ... anyone that says anything remotely intimidatory, suggestive of violence needs to be acted on very quickly."

Acting Premier Rita Saffioti and Police Commissioner Col Blanch have commended the member of the public who spoke to police after coming across the post online which led to Glynn's arrest.

"The report from the member of the public was critical and demonstrates just how important it is that the community in Western Australia is kept safe, but also the community in Western Australia engage in this process," Mr Whitby said.

Glynn had a gun licence for hunting, and all but one of his firearms were registered, but Mr Blanch has instructed his officers to initiate a process to cancel Glynn's permit.

The accused is being investigated by officers linked to Operation Dalewood, which was launched by WA Police in response to the Bondi attack.

He was not known to WA, NSW or federal authorities before his arrest, and there is no evidence to suggest any attacks are being planned, Mr Blanch said.

"We don't think there is an ongoing threat. We don't believe there to be a network involved. We think this is an individual who has made these comments online," he said.

Mr Whitby reiterated WA's tough penalties for hate-related crimes, including up to five years imprisonment for displaying Nazi symbols or performing Nazi salutes and up to 14 years for conduct intended to incite racial hatred.

Prime Minister Anthony Albanese praised the efforts of WA authorities to arrest the man.

"There is no place in Australia for anti-Semitism, hate and violent ideologies," he said in a social media post.