March 24 - In Jonesboro, Arkansas, two young boys (aged 11 and 13 years) fire upon students at Westside Middle School while hidden in woodlands near the school. Four students and one teacher are killed and 10 injured.
April 10 - Good Friday: 18 hours after the end of talks deadline the Belfast Agreement is signed between the Irish and British governments and most Northern Ireland political parties.
April 25 - A waste reservoir at Los Frailes mine in Andalusia, Spain, ruptures, discharging heavy metal waste into the Guadiamar River. The pollution threatens the sensitive ecosystem and endangered species of Doñana National Park, Spain's largest nature reserve, but is diverted into the Guadalquivir River. Up to 100 km² of farmland are ruined by the spill.