Two earthquakes have been recorded in Co Donegal within the past 36 hours.
They come less than three weeks after an earthquake measuring 1.6 was recorded in the northeast of the county.
The latest events on Tuesday night and yesterday morning measured 1.5 and 1.7 respectively and were felt by residents in the Termon and Milford areas, north of Letterkenny.
They were validated yesterday by the School of Cosmic Physics in the Dublin Institute of Advanced Studies.
But Dr Thomas Blake, experimental officer at the school, ruled out any link with the Haiti earthquake.
He also said that they were not indicators of a build up to a major event.
Callers to Highland Radio reported feeling tremors at around 8.50pm on Tuesday and 7.50am on Wednesday.
One man who lives in the village of Termon, five kilometres north of Letterkenny said he was watching television with his wife when he felt the tremor on Tuesday night.
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