Independent MP Helen Haines has lost a leg and remains in critical condition after being struck by a vehicle outside her electorate office in Wangaratta, Victoria. Police say a 43-year-old man was arrested at the scene and could be charged with causing harm to a commonwealth public official. Counter-terrorism authorities are investigating, and it is not yet clear whether the alleged attack was politically motivated. The Australian Federal Police say the incident appears isolated and that no known threats are connected to it. Prime Minister Anthony Albanese said the attack was clearly aimed at causing harm to Ms Haines.