The OPR-33 was an anarchist terrorist group that operated briefly during the 1970s. Despite the relatively small number of attacks and kidnappings it carried out, the group was high on the radar screen of both American and Uruguayan security forces during the period of Operation Condor, in which many operations were carried out against left-leaning groups in Latin America. The OPR-33 is believed by some to have been the clandestine armed wing of the Uruguayan Anarchist Federation.
According to declassified U.S. Defense Department documents, the OPR-33 was effectively destroyed in a raid carried out in Buenos Aires by Argentinean and Uruguayan security forces in September 1976.
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U.S. Government Designations
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These data were collected for the Terrorism Knowledge Base® (TKB®), managed by the Memorial Institute for the Prevention of Terrorism (MIPT) until March 2008. START has neither reviewed nor verified these data, but is presenting this information as a service to the homeland security community.