The police said there was no casualty.
A bomb explosion has occurred at Kasuwan Kuturu market in Mubi area of Adamawa State.
The News Agency of Nigeria quotes the Adamawa Commissioner of Police, John Abakasanga, as saying the explosion targeted a police patrol team.
He said there was no casualty from the blast.
Adamawa is one of the three states under emergency rule due to the activities of the Boko Haram insurgents.