Gardaí believe a man whose body was discovered at a waste-recycling facility in west Dublin on Saturday died in suspicious circumstances.
The man, whose identity is not yet known, was found dead at the plant in Clondalkin at about 1am.
The investigation is at an early stage and the findings of a postmortem will determine its course.
However, a Garda source said the case was being treated as suspicious and investigating officers believe the man may have been murdered.
In a statement, the force said a senior investigating officer had been appointed to lead the inquiry, with an incident room established at Ronanstown Garda station.
The Garda said it was investigating “all the circumstances” surrounding the discovery and that the Office of the State Pathologist had been notified.
The man’s body remained at the scene on Saturday morning with the Garda Technical Bureau due to carry out a technical examination.
Local Sinn Féin councillor William Carey said: “I just feel for the family. My thoughts would go out for any family of any person who is found in those circumstances.”