Police have dismantled a New IRA plot to commit attacks during US President Joe Biden's visit to Northern Ireland. British army bomb scouts were involved in the search for material that could have been used to make explosives in Derry.
The plans were to carry out a mortar attack similar to the one that seriously injured two policemen last November in the town of Strabane. British intelligence services decided to raise the terrorist alert in Northern Ireland to the highest level ("severe risk") for the first time in twelve years.