US President Joe Biden arrives in Northern Ireland to mark 25th anniversary of Good Friday Agreement. Police find four pipe bombs in a cemetery hours before his plane lands in Belfast.
Biden will also visit Ireland's capital Dublin for a meeting with President Michael Higgins and Prime Minister Leo Varadkar. He is expected to deliver a speech there to celebrate "the deep historical ties between the United States and the Republic of Ireland," according to the White House. The White House stresses that Biden should not engage in political talks during his visit.