What do I do if I find a passport I'd reported lost/stolen?

Never travel on your passport if it has been reported lost or stolen. You run the risk of being stopped at border crossings, as Interpol keeps a record of all reports of lost or stolen passports.

You should return the passport to the Embassy of Ireland at: The Embassy of Ireland, The Amp Walk, 218 Jalan Ampang, 50450 Kuala Lumpur