45 operating in that area of the country, which was one criterion among others that was considered by the National Directorate of Prosecutor’s Offices to assign the National Human Rights Unit.”243 144. On September 6, 2000, Ramón Isaza was declared in abstentia.244 145. In August and November 2000, several on-site judicial inspection visits were conducted. On September 4, 2000, an on-site visit was made to the general archive of the Ministry of National Defense in order to obtain FTA documents, though not a single document from said group was found there. However, information was obtained from soldiers who were in the Pedro Nel Ospina Battalion from June to July, 1996 on La Piñuela military base.245 On August 11 and then on November 21 and 22, 2000, on-site judicial inspection visits were conducted at the general archives of the Ministry of National Defense, 4th Brigade of the Army, headquartered in Medellín, the Ingenieros No. 4 Pedro Nel Ospina Battalion command, headquarters and the No. 4 Mechanized Juan de Corral Group,246 though no relevant information on the case was found in the archives.”247 The record shows that an on-site judicial inspection visit was made to Barbacoas Counter-Guerrilla Battalion No. 42, where it had been stated that the census was kept of the entire area under FTA jurisdiction contiguous to the highway.248 An onsite inspection visit was also made to the 4th Brigade, where documents were found corroborating that in June and July of 1996, the FTA was commanded by Major Guzmán and conducted activities in the area of El Carmen de Viboral.249 243 Annex 10. Official Letter of the National Human Rights Unit of the Office of the Attorney General of the Republic, dated August 23, 2000. Case File No. 233 UNDH. Book No. 3A. Pages 136-140. Compact disk attached to petitioners’ communication of June 24, 2010. 244 Annex 10. Decision of the National Human Rights Unit of the Office of the Attorney General of the Republic, dated September 6, 2000. Case File No. 233 UNDH. Book No. 3A. Pages 155-156. Compact disk attached to petitioners’ communication of June 24, 2010. 245 Annex 58. Report No. FGN-DI-GDH-0488C4 of Judicial Investigator of the CTI Human Rights Group, Danilo Henao Alzate, dated September 4, 2000. Annex to petitioners’ submission received in the IACHR on February 1, 2007. 246 Annex 59. Judicial inspection visit conducted by the human rights group of the Division of Investigation of the Office of the Attorney General of the Nation, signed by Danilo Henao, at the facilities of the general archives of the Ministry of National Defense, dated August 11, 2000. Case File No. 233 UNDH. Book No. 5A. Pages 1-2. Compact disk attached to th petitioners’ communication of June 24, 2010; Annex 60. Judicial Inspection visit of the 4 Brigade of the Army headquartered in Medellín, conducted by the National Human Rights Unit, dated November 21, 2000. Case File No. 233 UNDH. Book No. 7. Compact disk attached to petitioners’ communication of June 24, 2010; Annex 60. Judicial inspection visit to the command headquarters of Ingenieros No. 4 Pedro Nel Ospina Battalion, conducted by the National Human Rights Unit, dated November 22, 2000. Case File No. 233 UNDH. Book No. 7. Compact disk attached to petitioners’ communication of June 24, 2010; Annex 18. Official Letter No. 2408/DIJIN.GRUHO.D.H. of the Homicide Group of the Crimes against the Life and Integrity of Persons of the Central Directorate of the Judicial Police, dated November 27, 2000. Case File No. 233 UNDH. Book No. 6. Compact disk attached to petitioners’ communication of June 24, 2010. 247 Annex 18. Official Letter No. 2408/DIJIN.GRUHO.D.H. of the Homicide Group of the Crimes against the Life and Integrity of Persons of the Central Directorate of the Judicial Police, dated November 27, 2000. Case File No. 233 UNDH. Book No. 6. Compact disk attached to petitioners’ communication of June 24, 2010. 248 Annex 60. Judicial inspection visit to the command headquarters of Ingenieros No. 4 Pedro Nel Ospina Battalion, conducted by the National Human Rights Unit, dated November 22, 2000. Case File No. 233 UNDH. Book No. 7. Compact disk attached to petitioners’ communication of June 24, 2010. 249 th Annex 60. Judicial inspection visit of the headquarters of the 14 Brigade, conducted by the Sectional Unit of Prosecuting Attorney’s Offices, dated November 22, 2000. Case File No. 233 UNDH. Book No. 7. Compact disk attached to petitioners’ communication of June 24, 2010.