However, his sympathies for the native peoples led to accusations that he was fomenting rebellion, so he was imprisoned and recalled to St. Petersburg, dying en route at age 37, although his diaries were later published to great acclaim and historic significance.
Con todo, as súas simpatías polos pobos indíxenas levaron ás acusacións de que estaba fomentando a rebelión, polo que foi destituído e encarcelado en San Petersburgo, morrendo no camiño á idade de 37 anos, aínda que os seus diarios publicáronse posteriormente con gran aclamación e importancia histórica.