If you have lost your passport in India, it can take up to a week to issue an emergency travel document.
You need to provide the following original documents. If you do not have the originals in India, the originals must be brought to the Passport Office in Dublin or Cork to be seen. They will then send on copies to the Embassy.
Evidence of your entitlement to Irish citizenship so one of the following documents:
Evidence of your identity
Evidence that your passport has been lost/stolen
Once you have received a new travel document, you must go to the Foreigners Regional Registration Office (FRRO) to have your visa re-fixed to your new passport or to obtain an exit visa. You cannot leave India without an exit visa.
If you do not live in Ireland, or plan to travel to another country, you must check if the authorities will accept a temporary passport. If you require a full Irish passport, this will take 4 to 6 weeks to process.