"So far, we have 31 dead victims and 38 people in hospital receiving treatment" as a result of yesterday's blast, the National Emergency Management Agency's coordinator in the city Sa'ad Bello told AFP.
"Some whose injuries were not severe were discharged," he added.
The blast happened at about 7:40 pm at the Jimeta Main Market in the Adamawa state capital, just as traders were finishing business for the evening.
There was no immediate claim of responsibility but fingers will likely be pointed at Boko Haram, which has carried out several attacks in the north of the state in recent weeks.