Crowds of devoted worshippers descended on Knock shrine after a teenage traveller claimed a vision of the Virgin Mary would appear.
The 14-year-old boy was at a shrine in Fátima, Portugal last May when he said he saw visions of the Virgin Mary and that she told him she would appear again in Knock at 3pm on Saturday.
Hundreds of people gathered at the Irish shrine at the weekend in the hope that they would be blessed.
In an audio message posted online, the boy's father explained what his son had witnessed in Portugal.
'For two days our son seen Our Lady in Fatima and he seen the visionaries,' he said.
He added that he was in no doubt about the miraculous nature of his son's visions.
'The visionary from Medjugorje was speaking to him in Portuguese and he was able to understand every word out of her mouth, he got that gift to understand any visionary,' he said.
'On the 10th of June we will be going to Knock and whoever wants to come is welcome. Our Lady will appear there.'
'What it is, is that Our lady will appear on the ground there to,' he said 'and she will bless everyone on the ground'.
On Saturday, as the crowd waited for the Madonna to appear, one worshipper captured the clouds parting.
Some claimed the footage of the sun shining down on the people below was proof that they had been blessed by a higher power.
But others remained sceptical.
Biddy Connors uploaded the video on Facebook and said: 'Our lady appeared in Knock today. Astonishing Never get over what I seen. Please watch.'
The video received mixed comments.
One commenter replied: 'I didn't see anything.'
Another added: 'What? Clouds?'
The Virgin Mary is also believed to have appeared at the Knock Shrine in 1879.