Police said they received reports about a man with the weapon around 1.15pm on Wednesday, after he entered the Victoria Park office of Ms Beazley, WA's Minister for Local Government. Officers attended quickly and found the man nearby in Bentley, arresting him. He is currently helping police with their inquiries and has not been charged.
Ms Beazley said in a statement that staff in her electorate office faced "a confronting situation" when a member of the public entered armed with a weapon. "I have spoken to my staff, who are understandably shaken and upset by what took place. Fortunately, no one was injured during the incident," she said. "Right now, my focus is on the welfare of those staff members."
The incident comes days after federal member for Indi Helen Haines was attacked outside her office in Wangaratta on Monday, when a man allegedly hit her with a white Toyota four-wheel-drive. Brendan Nugent, 43, has been charged with dangerous driving causing injury, intentionally causing injury and a Commonwealth offence of causing harm to a Commonwealth public official. Ms Haines' husband announced on Wednesday that she had lost both legs following emergency surgery. Police have alleged the attack was targeted, but there is no confirmation it was politically motivated.
The Haines attack has prompted WA parliamentarians to voice concerns about a "decline in civil debate", and Ms Beazley said the Victoria Park incident was a worrying example of violence in the community. "Everyone has the right to go about our lives free from the fear of violence, at work, at home and in the community," she said. She said she did not yet know the motivation behind the incident and would not comment further while it was under police investigation.
Earlier on Wednesday, One Nation WA leader Rod Caddies claimed a man threatened to kill him while he was driving home from parliament. Caddies said the man yelled abuse and threatened to follow him home and kill him. He took a photo of the driver's number plate and alerted the dignitary protection unit. A WA Police spokeswoman confirmed police were investigating and said the force had "established capabilities to assess and respond to threats against elected representatives".