A residential building in the Sango Police Barracks in Ibadan, the capital of Oyo State, collapsed on Saturday evening.
However, the number of imprisoned individuals or casualties, if any, remained undetermined.
The collapsed structure is in front of a three-story residential structure in the vicinity.
The National Emergency Management Agency, NEMA, Ibadan, and the Oyo State Police Command could not be reached for comment on the incident at the time of the filing of this report.
Residents of the area are intensifying their efforts to remove the debris.