A staff member in An Post is being investigated for the alleged theft of letters and small parcels.
Gardaí have confirmed they're looking into the incident in the Dublin 12 area.
A number of undelivered letters and small packages have since been found following an extensive investigation.
The packages have since been returned to customers.
An Post has apologised to those affected and described it as a 'serious service failure'.
It's also set up a dedicated phone line for anyone affected.
Reporting by Stephanie Rohan
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