Eugenio Berríos

Eugenio Berríos Sagredo (November 14, 1947 – 1992) was a Chilean biochemist who worked for the DINA intelligence agency. Berríos was charged with carrying out Proyecto Andrea in which Pinochet ordered the production of sarin gas, a chemical weapon used by the DINA. Sarin gas leaves no trace and victims' deaths closely mimic heart attacks. Other biochemical weapons produced by Berríos included anthrax and botulism. Berríos also allegedly produced cocaine for Pinochet, who then sold it to Europe and the United States. In the late 1970s, at the height of Beagle Crisis between Chile and Argentina, Berríos is reported to have worked on a plan to poison the water supply of Buenos Aires. Wanted by the Chilean authorities for involvement in the Letelier case, he escaped to Uruguay in 1991, at the beginning of the Chilean transition to democracy, and what has been identified as his corpse was found in 1995 near Montevideo.

Known in the DINA under his alias "Hermes", for which he began to work in 1974, Berríos was connected to the creation of the explosive used for Orlando Letelier's car-bombing assassination in Washington, D.C. in 1976. In April 1976, Berríos synthesized sarin. He was also suspected, along with DINA agent Michael Townley, of the torture and assassination of the Spanish citizen Carmelo Soria.

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