The man - thought to be in his late 20's or early 30's, and originally from Strabane, was discovered in an apartment in Mullingar this morning.
Gardai found the man's body when they were called to an apartment on Grove Street in Mullingar at around 7.30 this morning.
Originally from Strabane the man had been living in the town for a number of years.
They're treating his death as suspicious.
The state pathologists office was notified and a full post mortem examination will be carried out tonight or tomorrow morning.
Gardai have also technically examined the scene.