In 2001, several MRTA members remained imprisoned in Bolivia. In September 2003, four Chilean defendants, including Jaime Castillo Petruzzi, were retried and convicted of membership in the Túpac Amaru Revolutionary Movement and participation in an attack on the Peru–North American Cultural Institute and a kidnapping-murder in 1993. On 22 March 2006, Víctor Polay, the guerrilla leader of the MRTA, was found guilty by a Peruvian court on nearly 30 crimes committed during the late 1980s and early 1990s. In a case that attracted international attention, Lori Berenson, a former MIT student and U.S. socialist activist living in Lima, was arrested on 30 November 1995, by the police and accused of collaborating with the MRTA. She was subsequently sentenced by a military court to life imprisonment (later reduced to 20 years by a civilian court). Peru's Truth and Reconciliation Commission determined that the group was responsible for 1.5% of the deaths investigated. In its final findings published in 2003, the Commission observed:  The Truth and Reconciliation Commission goes on to note one of the MRTA's goals was to legitimize politically-motivated violence in Peru. The Truth and Reconciliation Commission both condemns this justification of violence, and argues it contributed to the ability of other organizations to inflict greater violence then they might have otherwise. Further, the existence of groups like MRTA the Truth and Reconciliation Commission argues legitimized the Government of Alberto Fujimori authoritarian, militaristic, and repressive policies.