A post mortem is due to be carried out today after a body was found in a derelict house in Dublin yesterday.
Gardaí say it may have gone undetected for a few months.
The remains were found at a run-down house at Royal Canal Bank West in Phibsboro just after midday yesterday.
It was decomposed to such an extent that Gardaí were not able to establish whether it was a man or woman.
The house was sealed off for a technical examination and the body was removed from the scene.
Gardaí do not suspect foul play at this stage but are keeping an open mind.
They are awaiting the results of the post-mortem and tests carried out at the scene before deciding what direction their investigation will take.
In the meantime, they are appealing for anyone with information to come forward.