Gerhard Klammer was a German geologist who informed authorities that Adolf Eichmann was hiding in Argentina, which led to his capture by Mossad.
Klammer and Eichmann, under the alias 'Ricardo Klement', both worked for CAPRI Construction in Tucumán Province.
[1] Klammer recognized 'Klement' as Eichmann, and, when he returned to Germany, attempted to report him, but German authorities did not take action.
He confided in his friend Giselher Pohl, a priest, who told his bishop of Klammer's sighting.
[2] Klammer applied in 1939 to join the SS, but his application was rejected, as his father had tuberculosis.