A SIM card retrieved from the cellphone of a man who fell to his death off the Cliffs of Moher has saved the life of his partner, who was left gagged and bound in their home for almost two days.

Police in Co. Roscommon found the SIM card when they were attempting to identify the body of a man who had fallen from the Cliffs of Moher on Wednesday.

Details from the man’s iPhone led police an apartment in Roscommon early Thursday morning, where they discovered his partner tied to a bed, unable to move.

One senior officer told the Irish Independent: "She might not have been found for several days if the SIM card had not been recovered and we were able to find out the address."

Police believe that the two incidents are linked.

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The female has since been identified as separated mother-of-two Collette Keane, who is in her 50s. Keane was dehydrated and traumatized when police discovered her at around 1am. She is thought to have been there since Tuesday night.

She was taken to a nearby hospital where her condition was described as serious but not life threatening.

The body of her English partner, Paul Timothy (47) was discovered at the bottom of the Cliffs of Moher on Wednesday afternoon. Timothy had travelled on a tour from Galway city to the Clare tourist attraction. The alarm was raised when he failed to return to the bus.