Video - Religious unrest key concern in run-up to Nigeria election

Religious violence between Christians and Muslims is also a concern ahead of Saturday's vote in Nigeria. Officials in the northwest have discovered the bodies of 66 people killed by what they are calling "criminal elements". The remains of 22 children were among those found in eight villages in the Kajuru area of Kaduna state. Security forces say they have already made some arrests.

Video - Nigeria elections delayed by transport problems

Fires, possible sabotage and logistical challenges are being blamed for Nigeria's election being pushed back. A last-minute decision to postpone the ballot by one week caught everyone, from voters to candidates, off guard. The Electoral Commission says many states simply were not ready to hold the election, and more time was needed to ensure the elections were free, fair and credible.

Video - Disappointment and anger over elections delay in Nigeria

The postponement of elections in Nigeria has been a major inconvenience for millions of voters, especially those who have taken long and expensive journeys to cast their ballots. On Saturday, the election commission decided to delay polls for a week, saying it needs more time to ensure a free and fair vote. But there are concerns that the decision could lead to a low turnout.

Video - Economic fears mount over Nigeria election delay

Some of Nigeria's leading presidential candidates have condemned the decision to postpone elections by a week. Many have blamed each other for the delay, announced by the election commission hours before polls were due to open. There is also growing concern about the economic effect.

Video - Gunmen kill 66 in Nigeria

There's a twist to the story of an attack that reportedly claimed over 60 lives in some communities in Kaduna State, in the northwest of the country. Authorities said 66 people were killed by unknown gunmen in Kajuru on Friday night. Among the dead were 22 women and 12 children. But some of the residents are telling a different story.