11–12 January – Hundreds of non-inmates, mostly visitors, are inside San Isidro prison in Popayan, Cauca during a prison protest over living conditions, including overcrowding. Many are relatives and loved ones of inmates voluntarily staying as a part of the protest, but others have been taken hostage. On the 11th, 18 of those taken hostage are released.[1]
February
4 February – Amnesty International announces the closure of its Bogotá office after recent threats.
25 February – Víctor Carranza, known as the “emerald czar” is arrested.[2]
27 February – The director of the Permanent Committee for the Defense of Human Rights of Antioquia (Spanish: Comité Permanente por la Defensa de los Derechos Humanos de Antioquia) Jesús María Valle Jaramillo is shot and killed in his office in Medellín.[3]
19 May – The Twentieth Brigade of the Colombian army is suspended, pending reorganization. This was after the government publicly connected them to the 1995 murder of Álvaro Gómez Hurtado.[2]
21 June – The second round of the 1998 presidential election is held; Andrés Pastrana Arango of the Great Alliance for Change wins with a 50.34% majority over the Liberal Party's Horacio Serpa.