France, Aug. 26 -- An armed group posted a video on Monday showing what ⁠residents said were about ⁠600 women, children and ​older people abducted in Friday's attack on a mosque in Dekara village.

The video, posted on Facebook and WhatsApp, ⁠showed large groups of people seated in a forested area surrounded by armed men. Several children could be heard crying in the background.

Reuters could not confirm the number of people abduced, but if confirmed it would rank among Nigeria's largest and most audacious ⁠mass kidnappings in recent years.

An official from Borgu district, where the attack happened, said 30 people had been killed during the attack and were ​buried on Sunday.

The official, who decline...