Forty-four people were killed when two bombs exploded at a crowded mosque and an elite Muslim restaurant in the central Nigerian city of Jos, an emergency official said.
Abdussalam Mohammed, of the National Emergency Management Agency, said 67 other people were injured and are being treated in hospitals.
Witnesses said the blast at the Yantaya Mosque came as a leading cleric who preaches peaceful co-existence was addressing a crowd during the holy month of Ramadan.
Another bomb exploded at Shagalinku, a restaurant patronised by elite politicians.
Jos is located where Nigeria’s majority Muslim north and mainly Christian south collide. The city has been targeted in the past by bomb blasts claimed by Boko Haram Islamic extremists that have killed hundreds of people.