Fifteen people were reported injured when two female suicide bombers targetted the edge of a military barracks in Borno.
Soldiers shot dead one woman as she tried to get into the informal market at the base of 333 Artillery Nigerian Army in Maiduguri on Wednesday evening.
Borno state police spokesman Edet Okon said the woman’s explosives detonated when she was shot. A second bomber blew herself up in a nearby motorised rickshaw, he added.
“As a result of the explosions, the two bombers died instantly while 15 persons were injured and were rushed to the hospital for treatment,” he said in a statement.
A bomb disposal team had “sanitised” the area, he added.
Emergency services in the city said they had no further information on the blast, which came just days after nine soldiers were killed in a Boko Haram attack north of Maiduguri, Punch reported.
Markets on the fringes of military barracks typically sell basic needs to soldiers, including food and alcohol, and are often frequented by troops as well as civilians.
Police said the blasts happened at 8:20 pm (1920 GMT) but AFP has been told it occurred about 30 minutes before the night-time curfew in Maiduguri at 10:00 pm.
Suicide bombers, many of them women and young girls, have previously targeted security checkpoints, as well as markets, mosques and camps for those displaced by the insurgency.
On Saturday, suicide bombers killed 43 in Damboa, southwest of Maiduguri, which has raised fresh questions about security for internally displaced people (IDPs) in the remote region.
The government, which maintains Boko Haram is on the verge of defeat, wants IDPs to return home.