No official reason was given for Mamadou Ismael Konate's abrupt departure from the government, but a source close to the minister told AFP his decision was "related to the Ras Bath case".
Mohamed Youssouf Bathily, alias Ras Bath, himself a minister's son, regularly broadcast tirades against the administration of President Ibrahim Boubacar Keita until his arrest in August 2016.
News of Bathily's detention led to protests on the streets of the Malian capital Bamako, and one person was killed and dozens injured in the ensuing violence, which also caused widespread damage.
Bathily, who as well as being a radio presenter is a major figure in the country's opposition, had accused Keita of being unable to manage the Malian army, and also sharply criticised several senior military figures on his show.
Konate will be replaced by Hamidou Younoussa Maiga, a lawyer, according to a decree read out on Malian television.
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