A 30-year-old man from Queanbeyan has died at the scene following a two-vehicle collision on Pialligo Avenue, police say.
They said a Holden Astra hatchback and a Nissan Patrol SUV collided on the road between Scherger Drive and Oaks Estate Road, Majura, about 9.10am.
ACT Road Policing acting Inspector Mark Richardson said the 30-year-old man was treated by emergency services but died at the scene.
He said a man and a woman who were travelling in the SUV were also treated by ACT Ambulance intensive care paramedics before they were taken to Canberra Hospital with non-life threatening injuries.
Earlier, an ESA spokesperson said the man had been trapped in the car and had to be extricated before he was taken to hospital.
Inspector Richardson said it was tragic incident, especially for this time of the year.
Pialligo Avenue was closed east of Scherger Drive for several hours on Wednesday and has now reopened for traffic.
"The reasons behind this accident will become evident once the investigation gets underway," Inspector Richardson said.
He said road conditions would form part of the investigation.
With Canberra experiencing a spate of wet weather, Inspector Richardson urged motorists to drive to the conditions of the road.
Police would like to speak to anyone who may have seen the crash, or who may have dash-cam footage of Pialligo Avenue in the lead-up to it. They asked anyone with information that could help them to contact Crime Stoppers on 1800 333 000, or via the Crime Stoppers ACT website and quote 7625178.
It is the fourth fatality on ACT roads in 2023.