Gardai have been called to the scene of an incident at Tesco in Carrick-on-Shannon.
The store was evacuated just after 2pm after a reported bomb threat.
The Garda Press Office was unable to confirm the nature of threat but said that store management had evacuated the store and its customers as a precaution.
Gardai are continuing their investigations into the incident.
Tesco says that the store has reopened (4pm update).