Three female suicide bombers blew up a mosque overnight in Niger's southeastern city of Diffa, killing 10 worshippers who had gathered after the breaking their Ramadan fast, an army spokesman said.
A suicide bomber killed 11 people on Wednesday in an attack on a mosque in northeast Nigeria, the epicentre of the conflict with militant insurgency Boko Haram, military officials and an aid worker said.
Egypt mourned on Saturday as the death toll from a gun and bomb assault at a mosque in the Sinai Peninsula soared above 300, including children, in the deadliest attack the country has witnessed.
Gunmen who attacked a mosque on Friday in Egypt's North Sinai brandished an Islamic State flag as they opened fire through doorways and windows, killing more than 300 worshippers, including two dozen children, officials said on Saturday.
Armed attackers on Friday killed at least 235 worshippers in a bomb and gun assault on a packed mosque in Egypt's restive North Sinai province, state media reported, the country's deadliest attack in recent memory.
The death toll from Friday's mosque attack in Kabul has risen to 28, while more than 50 were injured, including women and children.