At least 31 people were killed in two blasts that hit Nigeria's central city of Jos on Thursday, eyewitnesses said."The twin blasts were simultaneous, including one that occurred at Terminus area near Mr. Bigg's," Theophilus Tunkus, a resident of Jos told The Anadolu Agency.Mr. Bigg's is Nigeria's first fast food chain. Tunkus said the second blast took place at Masalasi Jumah (Friday mosque) Street.Nigeria's National Emergency Management Agency coordinator in Jos, Mohammed Abdulsalam, meanwhile, confirmed the two blasts. He could not, however, mention the exact number of victims in the two attacks."At the moment, we are attending to victims," Abdulsalam told AA by phone.Jos is the administrative capital of Plateau State, which has been the epicenter of tribal clashes in recent years.These tribal clashes have been fuelled largely by socioeconomic and political rivalry among major tribes-especially local Berom farmers and Hausa-Fulani herdsmen.At least six people-including two female suicide bombers-were killed when multiple blasts rocked a crowded textile market in the northern city of Kano on Wednesday.Thursday's blasts come two weeks after multiple blasts at Kano's central mosque claimed at least 50 lives, according to Nigeria's National Emergency Management Agency.