According to NGR official Released statement, the president will be addressing the nation later this evening by 7PM

See what they wrote below
STATE HOUSE PRESS RELEASE
PRESIDENT BUHARI ADDRESSES THE NATION
Following detailed briefing by security chiefs on the current situation in the country, President @MBuhari will make a national broadcast Thursday, October 22, 2020 at 7pm.
Television, radio and other electronic media outlets are enjoined to hook up to the network services of the Nigerian Television Authority (NTA) and Radio Nigeria respectively for the broadcast.
— Presidency Nigeria (@NGRPresident) October 22, 2020
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