Russia’s propaganda outlet RT (formerly Radio Moscow) reports that Moscow “knows nothing” of Rex Tillerson’s scheduled April visit:
rt.com

Moscow diplomats say they are not aware of any preparations for a visit by US State Secretary Rex Tillerson. Reuters said the American would arrive in Russia in April.

When asked about the reported visit on Tuesday, Russian Deputy Foreign Minister Sergey Ryabkov told Interfax: “I know nothing about it.”

(more at RT)