BAUCHI, Nigeria (Reuters) - Unidentified attackers killed more than 30 cattle herders in the northeastern Nigerian state of Adamawa, a police spokesman said on Tuesday. The attack, in the Numan area of Adamawa, began on Sunday night and fighting continued into Monday morning, said Othman Abubakar, a police spokesman for the state, adding that an investigation was underway. He gave no further details. Earlier on Tuesday, a suicide bomber killed 50 worshippers during morning prayers in a mosque in the town of Mubi in northeastern Nigeria, police said, in one of the deadliest attacks in the region in years. 
30 people killed in attack on cattle herders in northeast Nigeria: police official