At least nine persons died on Saturday after a suicide bomber set off a bomb inside a mosque in Maiduguri.
Witnesses say the bomber who pretended to be a worshiper.
Haruna Dawud, a trader at the Monday Market which is next to the mosque claimed he saw 20 bodies being evacuated but could not confirm how many were dead.
Another trader, Nura Khalid, said he personally counted nine corpses being taken out of the mosque.