Police have not yet confirmed details of the kidnapping, but locals who spoke to the BBC say most of those taken were teenagers or in their early twenties.
News of the abductions came as Nigerian parliamentarians approved a US$1 billion ($1.275 billion) loan - requested by the President in July - to upgrade military equipment and train more units fighting the north-eastern insurgency.
The latest reports of a ceasefire deal follow a number of previous claims by Nigerian officials that an end was in sight to the Chibok schoolgirls' ordeal, either through secret deals or imminent rescue operations. All such claims have so far proved unfounded.
Privately, British officials are sceptical that the girls will ever be released, pointing out that a rescue operation is considered impossible because of the risk of casualties, and that Nigeria's Western allies would not approve of its Government doing a prisoner swap with such a bloodthirsty group.