During the government of Alberto Fujimori, the National Intelligence Service used the General Army Barracks, known as the “Pentagonito” (Little Pentagon) as a clandestine detention center where opposition figures were punished, tortured, and executed. Fujimori knew that the Pentagonito was being used in that way, and he was fully aware of the strategy and methods employed by the Peruvian Armed Forces in their fight against subversion.

The testimony of the former Grupo Colina agents, Jesús Sosa and Santiago Martin Rivas, the records of the Army Intelligence Service (SIE), and the investigations into the cases were handed over to the Chilean justice system in order to demonstrate that during Fujimori’s government there was a pattern of systematic human rights violation that were in accordance with the strategy against subversion that was designed by Fujimori himself.

Among the victims who were kept in the basements of the Army Intelligence Service were Martín Rocas Casas and Kenneth Anzualdo Castro, both students at the National University of Callao. Likewise, Justiniano Najarro Rúa, former professor from Ayacucho, was held in the SIE basements. The outcome in these cases was discovered by Ricardo Uceda in his book, Muerte en el Pentagonito, in which he uncovered the fact that the authors of the kidnappings were members of the Army Intelligence Service and that the victims were last held in the SIE basements before their were bodies were cremated in the basements. The book was based on the testimony of Jesús Sosa, known as “Kerosene,” a former Grupo Colina agent. Sosa said that Roca, Anzualdo, and Najarro were all kidnapped, tortured in the basements of the SIE, and cremated in a furnace in the Pentagonito.

In addition to these cases, there are also the cases of business manager Samuel Dyer and journalists Gustavo Gorriti, who were also held in the Pentagonito. Even the wife of Fujimori himself, Susana Higuchi, was kidnapped and brought to the basements of the SIE where she was beaten, drugged, and kept in a cell. These acts occurred while Fujimori lived in the SIE building in 1992.

On September 21, 2007, the Supreme Court of Chile granted Fujimori’s extradition in the cases of Samuel Dyer and Gustavo Gorriti.

Samuel Edward Dyer was detained on July 27, 1992 by General Carlos Domínguez Solís, who at the time was the Chief of the Counter-Intelligence Directorate of the National Intelligence Service. Dyer was detained in Lima’s Jorge Chávez International Airport. He was later brought to the basements of the SIE building. He was supposedly detained under an arrest warrant for terrorism. However, no warrant was ever shown to him, nor did the immigration office at the airport have and records of there being a warrant against Dyer. Dyer was driven in a truck to the SIE building where he was received by Colonel Alberto Pino Cárdenas. There he was kept in a 3 x 3 meter cell without water or a bathroom. The cell had a small window with bars, but he could not see anything outside of it. It seemed as if the window opened only to a hallway. When Dyer was released from the basement he saw Fujimori walking up to the SIE building accompanied by a group of people with Asian characteristics.

On April 6, 1992, Gustavo Gorriti Ellenbogen was captured in his house by members of the Army Intelligence Service, who brought him to the SIE building. He was held in one of the basements. He was brought to a room in which he stayed until two or three in the morning. He was then brought to the Precectura.