2004
Fears grow of an ETA bombing campaign in advance of the March general election as police discover a 536kg bomb in a stolen van in February.
2003
An indefinite ban is imposed on Batasuna party and both the EU and US declare it a terrorist group. In July, bombs explode in the resorts of resorts of Alicante and Benidorm, injuring at least 13.
2002
Spanish government bans Batasuna.
2001
Judge Jose Maria Lidon is shot dead in Bilbao in November. A car bomb injures nearly 100 in Madrid.
2001
Senior Popular Party member Manuel Jimenez Abad is shot dead in the city of Zaragoza.
2000
ETA returns to violence as an army officer is killed in a Madrid car bombing.
1999
ETA breaks its ceasefire.
1998
ETA announces its first ceasefire.
1995
Popular Party (PP) leader, Jose Maria Aznar, escapes a car bomb assassination attempt.
1987
21 die in a Barcelona supermarket bombing.
1980
118 people are killed in ETA's bloodiest year to date.
1979
Six are killed and 130 injured in attacks on Madrid's airport and railway stations.
1978
ETA's political wing, Herri Batasuna, is founded to press for full independence in Alava, Vizcaya and Guipuzcoa.
1974
ETA is blamed as 12 are killed and scores injured in a bomb attack on a central Madrid bar.
1973
ETA assassinates Spain's prime minister, Admiral Luis Carrero Blanco.
1968
ETA murders its first victim, San Sebastian police chief Meliton Manzanas.