ABUJA, Dec. 9 (Xinhua) -- Twin blasts hit a crowded market in Madagali district of Nigeria's northeastern state of Adamawa on Friday, killing at least 11 people, survivors said.
The explosions occurred simultaneously at the opposite ends of the local market in Madagali, causing buyers and sellers to run for safety, witness Audu Yusuf said.
The survivor said he saw at least 10 injured people being sent to a nearby hospital.
The market is a weekly one that sells grains, vegetable and animals every Friday. The blasts occurred at the animal and grains sections of the market, according to Yusuf Mohammed, a senior district official.
Adamawa State police spokesman Othman Abubakar said it is unclear the twin explosions were carried out by suicide bombers or planted explosives, adding investigation would reveal the nature of the blasts later.
The National Emergency Management Agency (NEMA) said its rescue operation was still being ongoing.
Madagali is located 276 kilometers from the state capital, Yola. In August 2014, the district was one of several towns seized by terror group Boko Haram.
At least 30 people were killed when two female suicide bombers attacked a busy motor park in Madagali on Dec. 28, 2015.
