Nigeria's military says a suicide bomber has detonated inside a mosque in the country's northeast, killing six worshippers and himself.
An army spokesman, Colonel Sani Kukasheka Usman, said in a statement that two bombers first tried the larger Damboa Central Mosque early Friday but were kept from entering by armed soldiers acting as mosque security.
He said one bomber detonated and killed only himself near the Damboa Central Mosque, but the other bomber entered a smaller mosque and killed six with his blast.
Damboa is 70 kilometers from Maiduguri, the capital of Nigeria's northeastern state of Borno.
Officials often blame such blasts on Boko Haram Islamic extremists who have killed hundreds this year in the region.