Anti-immigration protesters clash with First Nations people and supporters in Melbourne and Canberra at otherwise peaceful rallies

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Police in Western Australia have shut down the location of a planned Invasion Day rally after receiving reports of a threat targeting the Perth CBD.

WA police issued a warning on Monday afternoon urging the public to stay away from the area and await further advice, saying they had deployed “significant police resources” to and set up an exclusion zone around Forrest Place. One person was in custody, police said.