At least 15 people were killed on Tuesday when a suicide bomber blew himself up at a mosque in Mubi, northeast Nigeria, the emergency services and a government official said.

Haruna Furo, head of the Adamawa state emergency management agency, and  Musa Hamad Bello, chairman of Mubi north local government area, said the blast happened during morning prayers.

"Around 15 worshippers were killed while several others were wounded," said Furo.