A man has been arrested in connection with the murder of Barney McGinley at a wedding in County Fermanagh last week.
The 63 year-old was shot outside a church in Newtownbutler last Wednesday.
Detectives from the Serious Crime Branch of the PSNI arrested a 46-year-old man in Belfast earlier.
He's being questioned at a police station in Belfast.
Mr. McGinley was laid to rest in Athlone on Monday - amid a huge garda presence, for fear of reprisals.
Mr. McGinley was a father of nine and grandfather of 49.

The remains of Mr. McGinley are removed from St. Mary's Church, Athlone.