The subject of this research is the analysis of the role played by the Fujimorist regime in Peru, i.e. the rule of Alberto Fujimori in that Latin American country from 1990 to 2000, in suppressing the activities of the left-wing, i.e. Marxist-Leninist guerrilla groups Sendero Luminoso and the Túpac Amaru Revolutionary Movement which represented the main security threat in the observed area from the 1980s to 2000. The basic assumption is that the Fujimorist regime, due to its authoritarian character, had greater success in the fight against Sendero Luminoso and Túpac Amaru Revolutionary Movement than was the case with the democratic regime before it, primarily due to the greater use of violence and brutal methods of suppressing guerrilla activity. The results of the research showed that it was in the period of the 1990s that the greatest successes of the state in the fight against the observed guerrilla groups were achieved, as evidenced, among other things, by the arrest of Sendero Luminoso leader Abimael Guzmán in 1992 and the complete neutralization of the Túpac Amaru Revolutionary Movement in 1997. The conclusion of the research is that the observed case is another indicator that authoritarian regimes, more prone to violence and less interested in human rights and freedoms, tend to solve security problems more quickly and efficiently, such as the activities of guerrilla groups, but also that security risks related to the activities of Sendero Luminoso in Peru still exist, although they are much smaller than before the 2000s. In the research, we used the historical method, the case study method and comparative analysis.