Last month, a device containing 60kg of explosives was found 16 miles away from the Lough Erne golf resort.

BBC: G8 summit: Airport security stepped up ahead of meeting

Mr Cameron announced in November that the G8 summit would be held at the Lough Erne golf resort near Enniskillen.

BBC: UK assumes presidency of G8 group

The meeting will take place at County Fermanagh's Lough Erne golf resort.

BBC: Prime minister David Cameron

Security throughout Fermanagh has been increased in recent weeks amid fears that terrorists may attempt to target the Lough Erne golf resort, which is hosting the G8 summit in June.

BBC: Army called to examine beer keg in Rosslea, Fermanagh

The five-star Lough Erne golf resort opened in 2007.

BBC: Lough Erne resort in Fermanagh to host G8 summit

They include the Lough Erne golf resort and Belfast International Airport, where US president Barack Obama, German Chancellor Angela Merkel and others are expected to land before being taken to Fermanagh by helicopter.

BBC: Northern Ireland