Konstantinas Avižienis

Konstantinas Avižienis was a Lithuanian military officer who acted as an assistant military attaché in Moscow under Jurgis Baltrušaitis. Avižienis collected personal documents of some Russian covert agents working in Lithuania, and after sending them back to the country, was shortly killed. Despite the official explanation being that Avižienis was killed by a jealous husband, it is widely believed that Avižienis was murdered by a Cheka agent due to him sending sensitive information to Lithuania.²