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Nigeria's first census in more than 15 years is due to be held in May, the head of the country's National Population Commission has said.
Nasir Isa Kwarra said digital technology would help to ensure that the nationwide survey was reliable and credible.
The findings of Nigeria's last census in 2006 were rejected by some southern groups; they claimed that the figures were manipulated to favour the north.
Estimates suggest that Nigeria's population is over 200 million, compared with 140 million in the previous census.
The exact date of the exercise is awaiting approval by President Muhammadu Buhari.
