The United States is following "extremely disturbing accounts" of large numbers of people killed in a village in central Mali, State Department spokesperson Ned Price said on Sunday.
Mali's military said on Saturday that it had killed more than 200 Islamist militants in the latest clash in a month of escalating violence.
Tensions with the West have increased since a move by Mali's ruling military junta to delay democratic elections in February, as well as over its collaboration with private military contractors belonging to Russia's Wagner Group.