Police working to identify potential charges for suspectpublished at 01:52 BST
The Australian Federal Police (AFP) Commissioner has just released a statement about Helen Haines with an update on the 43-year-old man who was arrested shortly after the incident.
The AFP and Victoria Police are "working closely together to identify potential charges," says Krissy Barrett, with possible state and Commonwealth offences including causing harm to a public official which carries a maximum penalty of ten years in prison.
"At this stage it appears this is an isolated incident, and there are no known threats connected to this matter," she says.
The investigation is being led by Victoria Police's security investigation unit with support from the state's joint counter terrorism team, which is includes the AFP and ASIO, Australia's spy agency.
Federal police have regularly raised concerns about "growing threats against federal parliamentarians and high office holders," Barrett says, and last October, a special unit was established to probe politically-motivated violence and hate, with 41 people charged as a result.
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