On Tuesday, two men were arrested in County Cavan in connection with Mr Kerin's murder.
Aisling McCarthy Brady, 34, from County Cavan, has been living in the US since 2002.
Laid off last year in Ireland, the 42-year-old arrived in Moose Jaw from County Cavan this month.
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The search is taking place under the patio at the home of former detective John Kerins near Bailieborough, County Cavan.
In the end, the road was reopened when a temporary bridge was erected from the County Cavan side.
But he will be allowed home for three days to be with his family in Ballyconnell, County Cavan.
Several thousand people attended a rally in Ballyconnell, County Cavan, on 28 July Sunday to show their support for the family.
The Slieve Russell hotel in County Cavan, also in the Republic, will be hosting part of a G8 delegation, thought to be Americans.
Quinn Building Products supplies cement, concrete, roof tiles and other quarry products from plants at Ballyconnell in County Cavan and Derrylin in County Fermanagh.
Mr Quinn was jailed on 2 November but had been allowed home for three days to be with his family in Ballyconnell, County Cavan, over Christmas.
Captain John Brooke, unionist Chief Whip and Chairman of Fermanagh County Council blamed Lord Kilbracken and Cavan County Council for the deaths.
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