Three staff members in the office of the Chief of Staff to the President, Abba Kyari, have tested positive for the novel coronavirus (COVID-19).
This was confirmed on Tuesday by a presidential source.
Kyari has been quarantined for treatment since he tested positive for the viral disease a day earlier.
Meanwhile, all the aides of Vice-President Yemi Osinbajo, with the exception of his media aide, did not show up for work on Tuesday.
The Vice-President himself reportedly arrived for work at his office in the afternoon the previous day, which is unlike his usual schedule.