Reports: 'Bomb kills at least 40 football fans in Nigeria'

The AFP news agency is reporting a bomb attack targeting fans watching a match at a football pitch in northeast Nigeria has killed at least 40 people

A police officer who asked for anonymity said: "There has been a bomb explosion at a football field this evening and so far more than 40 people have been killed."

The the town of Mubi has been attacked before by Boko Haram Islamists.