A/HRC/4/48 page 16 66. The Vice-President’s Office recorded 25 murders of trade union members, which represents a 79 per cent increase over 2005.13 Many of these murders were committed by unidentified persons, the FARC-EP and the ELN. The Ministry of Social Protection recorded 30 murders of unionized teachers and 18 of non-unionized teachers, attributed in many cases to the FARC-EP. 67. Annex I contains a selection of cases of breaches of IHL brought to the attention of the Office in the course of 2006. Guerrillas 68. The guerrilla groups have continued to commit serious and systematic breaches of IHL. Talks between the Government and the ELN and the prospect of a “humanitarian exchange” with the FARC-EP did not positively affect the attitudes of these groups in terms of their observance of IHL. Members of these two guerrilla groups were accused of murders, death threats, massacres, attacks against the civilian population, indiscriminate attacks, taking of hostages, acts of sexual violence, acts of terrorism, recruitment of children, use of anti-personnel mines, forced displacement, isolation of communities, and attacks against medical and humanitarian teams. 69. The ELN and the FARC-EP confronted each other in Arauca and other border departments, leading to murders, threats and forced displacements of protected persons, particularly among the rural population, community leaders, social activists, teachers and public officials. 70. Of the 17 massacres recorded by the OHCHR Office, 12 were attributed to members of the FARC-EP. 71. Numerous murders of civilians, particularly in Antioquia, Arauca, Bolívar, Caquetá, Norte de Santander, Santander, Risaralda and Valle, were attributed to members of guerrilla groups. 72. There were continuing reports of cases in which members of the FARC-EP and the ELN murdered municipal public servants, among them councillors and mayors. Such cases occurred, inter alia, in Huila and Caldas. 73. Threats by the FARC-EP against the civilian population were recorded, inter alia, in Caquetá, Nariño and Putumayo. 74. Direct attacks against the civilian population in Arauca, and indiscriminate attacks in Caquetá and Nariño, were attributed to the FARC-EP. One indiscriminate attack in Nariño was attributed to members of the ELN. 75. There were continuing reports of acts of terrorism attributed to members of the FARC-EP, among them, attacks with explosives in public places in Nariño and Valle. 13 Office of the Vice-President, Human Rights Observatory, “Situation indicators and results of operations by the security forces, December 2006”.