The 65-year-old parliamentarian was hit by a Toyota Land Cruiser SUV on Monday afternoon outside her electoral office in Wangaratta, in the southeastern state of Victoria.
Police confirmed that Haines, who has served in Australia’s Parliament since 2019, was transported to a hospital with critical injuries.
A 43-year-old man suspected of driving the vehicle was detained at the scene by a passerby before being taken into police custody.
Authorities said the suspect would be questioned as investigators worked to establish the circumstances surrounding the incident.
Police also recovered a knife from inside the vehicle.
“A knife was located by police and seized from inside the Toyota,” authorities said in a statement.
Prime Minister Albanese confirmed that Australia’s national counterterrorism team, comprising police and intelligence agencies, had joined the investigation.
Speaking to the Australian Broadcasting Corporation, Albanese suggested that the collision appeared intentional, although investigators had not determined a motive.
“This wasn’t an accident. There was a deliberate act, it would appear. We don’t know what the motivation is,” the prime minister said.
Police emphasized that they were still examining whether the incident was intentional and had not publicly established a motive.
The attack has renewed concerns about the safety of elected officials in Australia, where politicians have traditionally maintained close contact with constituents and often attend public engagements without extensive personal security.
Authorities have reported a significant increase in threats against political figures in recent years.
Australian Federal Police Commissioner Krissy Barrett said in 2025 that threats directed at parliamentarians had doubled over the preceding three years.
Home Affairs Minister Tony Burke also revealed Monday that police recorded more than 1,000 threats against politicians during the 2025–2026 financial year.
Albanese expressed concern about the increasingly hostile political environment, warning that polarization and aggressive public discourse were contributing to heightened security risks.
“I think there has been a rise in temperature and there has been too much shouting, not enough discourse, not enough polite conversation and disagreement,” he said.
The prime minister also pointed to social media as a contributing factor in the deterioration of political dialogue.
The incident comes amid broader international concerns about violence targeting public officials.
In Britain, Labour lawmaker Jo Cox was murdered in 2016 by a far-right extremist, while Conservative lawmaker David Amess was fatally stabbed in 2021 by an attacker inspired by the Islamic State group.
More recently, former British politician Ann Widdecombe was found dead at her home in July following a hammer attack. A suspect has been charged with murder and terrorism-related offenses.
These incidents have intensified discussions about the need for stronger security measures to protect public representatives while preserving their accessibility to the communities they serve.
Australian authorities have not announced charges in connection with the attack on Haines, and the suspect’s alleged motive remains unknown.
Investigators are continuing their inquiries as the country awaits further updates on the lawmaker’s condition.
