An explosion has killed at least 47 people in a crowded market in Borno state, northern Nigeria, officials said.
A military source told Reuters news agency that as many as 52 people are believed to have been injured in the attack.
BBC sources said that the explosion hit Jebo livestock market in Sabon Gari town in southern Borno at about 13:30 local time.
Currently, it is not clear if a planted device or a suicide bomber caused the explosion.
The attack is suspected to have been carried out by the Islamist militant group, Boko Haram. The state has been the center of many attacks carried out by the group along with more recently, attacks targeting villages and towns in neighbouring Cameroon, Chad and Niger.
Bombings in the area have intensified since Muhammadi Buhari was elected President of Nigeria, swearing to rid the country of the terrorist group. The BBC reported that since last May, when Buhari was sworn in, 800 people have been killed.