At least 30 people have been killed in a suicide bomb attack in the north-eastern Nigerian town of Madagali in Adamawa state, the army says.
Two female suicide bombers detonated their explosives in a busy market, an army spokesman told AFP news agency.
No group has said it was behind the attack.
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But Islamist militant group Boko Haram has been waging a seven-year insurgency against the government and often uses suicide attacks.
Dozens of others were wounded in the bombing, army spokesman Major Badare Akintoye said.
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