The night German war planes bombed Dublin

Two German aircraft bombed Dublin shortly after midnight on May 31, 1941. They had apparently become disorientated while on a bombing mission over either the Mersey, or the Bristol area, both of which were bombed that night.
About 30 German aircraft were sighted around Dublin. The first plane arrived shortly after midnight. A flare was sent up to denote neutral territory, but the plane dropped a bomb off the North Circular Road; it fell on soft waste ground and did little more than excavate a huge crater.