Witnesses said the church was packed and that there were many dead from the blast, although officials have not been able to confirm casualty figures and the area was cordoned off.
"We were in the church with my family when we heard the explosion. I just ran out. Now I don’t even know where my children or my wife are," said Timothy Onyekwere. "I don’t know how many were killed but there were many dead."
It was not known who exploded the bomb but Nigerian security forces are battling the militant Islamist Boko Haram group, which wants to impose Islamic sharia law across the country split roughly equally between Christians and Muslims.