One person has died and six others have been hospitalised after a serious crash on the Monaro Highway at Mugga Lane.
Three vehicles and a truck were involved in the crash which occurred just after 9am on Saturday.
The Monaro Highway was closed northbound after the collision. The highway reopened about 5.30pm on Saturday.
The six people taken to hospital are not believed to have suffered serious injuries.
ACT Policing officer in charge of traffic operations David Wills said police, ambulance and fire and rescue attended the crash at about 9.30am.
"As a result of the collision one of the occupants of the vehicles has died," Station Sergeant Wills said.
"These incidences are tragic and have an ongoing effect on members of the [emergency services] team and witnesses."
ACT Policing Collision Investigation and Reconstruction are investigating the collision. A report will be prepared for the Coroner.
This is the seventh fatality on ACT roads this year.
Police are calling for any witnesses and anyone with dash cam footage of the crash to contact Crimestoppers on 1800 333 000 or via the Crime Stoppers ACT website (reference: P1673286)