There is no hard intelligence of any major public disorder planned in the Republic of Ireland during the G8 Summit, a security source has said.
A police operation involving 900 Garda officers kicked off on Friday, with road checks in force along the border counties in south Donegal, Leitrim, Cavan and Monaghan. Senior officers said while there are no official events planned for the Republic, they remain conscious of the close proximity of the summit to the jurisdiction.
"We will be using all our intelligence to watch people of interest, criminals, subversives and any other people," a security source said. "The threat is significantly high up there, as always. But there is no hard intelligence or notifications of anything going on or of large social protests."
Garda chiefs are working side by side with the Police Service of Northern Ireland (PSNI) to address any policing or security issues that may arise before, during and after the summit.
Up to 4,500 PSNI officers will be on patrol during the gathering of the heads of the world's eight richest economies, including US President Barack Obama and Russian President Vladimir Putin. Plans have also been drawn up for special courts and extra detention cells at locations in the Irish Republic, including Donegal and Monaghan, should disorder break out.
Gardai said that as with any high profile event attended by world leaders, there is a heightened threat and risk, but maintained appropriate resources are in place to ensure the security and wellbeing of the delegates and the community of the north west of Ireland.
They plan to minimise any disruption to local communities and keep roads open, but have already started vehicle security checkpoint on roads leading to the Lough Erne Resort, in Co Fermanagh, and where delegates are staying.
Meanwhile gardai have warned of traffic disruptions across Dublin city when the First Lady Michelle Obama and her two daughters holiday in Ireland next week. The couple visited the president's ancestral homeland in Co Offaly in May 2011.
A Garda spokesman said there will be a security operation and a traffic management plan in place in and around the Dublin 2 area on Monday and Tuesday, including rolling road closures. Commuters and students are advised to give themselves extra time to travel around the city and use public transport where possible.
Kildare Street will be closed to through traffic from Sunday evening to Tuesday evening, but access to local premises - including the Dail - will be facilitated. Parking restrictions will be in place around St Stephen's Green.