At least 90 residential buildings, school, churches were reportedly destroyed by an explosion in Akure, the Ondo State capital.
The impact of the explosion destroyed houses and tore major roads apart.
A truck carrying explosive items to a quarry was said to have triggered the blast.
The Ondo State governor, Rotimi Akeredolu, in a tweet said he had been briefed and would visit the scene of the incident.
Akeredolu: “I’ve been briefed by security agencies in the state concerning the loud blast that was heard in Akure. I will be at the scene to assess on the advise of heads of our security agencies. I ask that all citizens remain calm as we ascertain details of the incidence.”