Security concerns rise ahead of Biden's visit to Northern Ireland.

Four suspected pipe bombs were recovered by the police from a cemetery near Londonderry ahead of US President Joe Biden's visit to Belfast to mark the 25-year anniversary of the Good Friday peace accord. The devices were found in an area linked to a parade opposing the peace accord where a police vehicle was attacked with petrol bombs and other objects. The police have left the scene and the Terrorism Investigation Unit will lead the investigation.