ACT Policing are investigating a suspicious death in Jacka which occurred on Monday 15 February 2016.
Police and ACT Ambulance Service officers attended a residence and a male was transported to hospital where he later died.
ACT Policing Criminal Investigations team will investigate the circumstances surrounding the matter which is alleged to be a family violence incident.
A 37-year-old male is currently assisting police with their enquiries.
The investigation is ongoing.
Police urge anyone who may have witnessed anything suspicious to contact Crime Stoppers on 1800 333 000, or via act.crimestoppers.com.au.