-71in touch with someone who knew how the facts investigated had occurred, but who, for safety reasons, did not want to identify himself or make a statement.145 95(119) On September 2, 2004, investigators from the Technical Investigation Corps of the National Human Rights and International Humanitarian Law Unit visited the Montería prison where they interviewed Pedro Hernán Ogaza Pantoja, who did not wish to collaborate by providing information on the location of the bodies that were buried on the “Las Tangas” ranch. Regarding the interview with Ogaza Pantoja, the investigators added: He was asked if he knew the whereabouts of ROGELIO DE JESUS ESCOBAR MEJIA and he answered that he had received information in prison that ROGELIO had been killed near Tierralta Córdoba, but he did not know if his body had been removed or whether he was disappeared.146 95(120) On September 29, 2004, investigators from the Technical Investigation Corps of the National Human Rights and International Humanitarian Law Unit went to the municipality of Apartadó, where they took statements from six next of kin of the disappeared.147 95(121) On May 16, 2005, the 36th Prosecutor of the National Human Rights and International Humanitarian Law Unit ordered the following probative measures: Verify the information concerning the death of ROGELIO DE JESUS ESCOBAR MEJIA, accused and collaborator, because he was an eye witness of the events and could clarify this investigation. Re-establish contact with the informer who knows the possible location of the Guacimal and/or Caudillo river sandbanks, through Doctor CARLOS MARTINEZ, Specialized Judge, in order to try and obtain a statement from him. Find the acting official of the Technical Investigation Corps, FERNANDO VANEGAS, who may have information on the facts, and take a statement from him. Interview, in the Municipal Prison, PEDRO HERNAN OGAZA PANTOJA, sentenced in these proceedings as a perpetrator [...]148 95(122) On June 13, 2005, investigators from the Technical Investigation Corps of the National Human Rights and International Humanitarian Law Unit reported on the measures taken to clarify the events of January 14, 1990, with regard to the possible location of the bodies of those abducted and on the determination of the whereabouts and possible death of Rogelio de Jesús Escobar Mejía.149 145 Cf. report on “Investigatory Collaboration” of October 6, 2004, issued by the Technical Investigation Corps of the National Human Rights and International Humanitarian Law Unit (file of useful evidence submitted by the State, folios 5678 to 5689). 146 Cf. report on “Investigatory Collaboration” of October 6, 2004, issued by the Technical Investigation Corps of the National Human Rights and International Humanitarian Law Unit (file of useful evidence submitted by the State, folios 5678 to 5689). 147 Cf. report on “Investigatory Collaboration” of October 6, 2004, issued by the Technical Investigation Corps of the National Human Rights and International Humanitarian Law Unit (file of useful evidence submitted by the State, folios 5678 to 5689). 148 Cf. decision of May 16, 2005, issued by the 36th Prosecutor of the National Human Rights and International Humanitarian Law Unit (file of useful evidence submitted by the State, folio 5690). 149 Cf. report on “Investigatory Collaboration” of October 6, 2004, issued by the Technical Investigation Corps of the National Human Rights and International Humanitarian Law Unit (file of useful evidence submitted by the State, folios 5693 to 5697).