Workers of the National Agency for Food and Drugs Administration and Control (NAFDAC), on Tuesday morning shut down the headquarters of the agency in Abuja, denying the acting director general, Yetunde Oni, access to her office.
Mrs. Oni was seen making a call on her phone in front of the gate on which the workers had hung a heavy padlock.
A few minutes later however, a team of armed policemen arrived at the scene, apparently in response to her call.
The officers later forced the lock open to allow Mrs. Oni into the premises.
Heavily armed policemen then cordoned off the area.
The development was in continuation of a protest by the workers against the management of the agency.
Premium Times reports that the workers had halted operations at the headquarters of the agency since last week when they began their protest.