A Perth man has been arrested by counter-terrorism police on allegations he made threats against the Prime Minister, and the WA Premier.

Jamon Hartzer was arrested overnight in relation to a series of threats against Prime Minister Scott Morrison, WA Premier Mark McGowan, and Victorian Premier Dan Andrews.

He has been charged with three counts of threatening to kill, and making a statement known to be false which indicated a threat.

6PR and Nine News reporter Gary Adshead was in court, and told Jo McManus police also seized high-powered weapons from Mr Hartzer’s home.

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