At least 36 people have been killed in a twin suicide bomb attack on a mosque in Maiduguri, northeastern Nigeria, according to witnesses.
Nigerian authorities in Borno State confirmed that at least 14 people have been killed, but local witness Amadu Marte told the Agence France Presse news agency that at least 30 bodies had been counted outside the mosque.
"All the people in the mosque died. Not a single one escaped," another local said.
The explosion caused the mosque in Molai, in the western suburbs of Maiduguri, to collapse, injuring many people who were worshipping at the time, Borno police said in a statement.
"Casualties have been evacuated to UMTH [University of Maiduguri Teaching Hospital] and specialist hospitals in Maiduguri," the statement added.
Eye witnesses stated that the two bombers had entered the mosque at 17:30 GMT disguised as worshippers, one set off his device inside the building while the other detonated his bomb after people had arrived to help the victims.
"When rescuers and sympathizers gathered in front of the place, the second one went off, killing many of them," Marte told the AFP.
Although no one has claimed responsibility for the attack, the Boko Haram militant group regularly carries out such attacks in Maiduguri.
Attacks by the Boko Haram militant group in the region have increased since Nigerian President Muhammadu Buhari took office in May, despite promising to take action against them.
Niger, Chad and Cameroon also suffer from the spillover of Boko Haram’s insurgency, which has a stronghold in the northern Nigerian states of Borno, Yobe and Adamawa.
In the past six years, some 17,000 people have been killed by the militant group, while clashes have left around 2.5 million people homeless.