Geologists and officials of the emergency management agency have visited Jaba Local Government area of Kaduna state, which recorded three earth tremor since last Sunday.
The geologists took the sample of the soil of the areas where the tremor occurred.
One of the fresh tremor was recorded on Monday at Sambang Dagi, while the second hit Nok earlier also on Monday.
The first recent tremor was recorded on Sunday at Kwoi, also in the Jabba Local Government area.
Another town, Hayan Magamu in the Ikara Local Government area of the state was also hit by earth tremor last July 30, destroying homes and injuring some people.
Recently, some communities in Cross River, Akwa Ibom and Oyo state also experienced earth tremor.