Abubakar Shekau claims to be the leader of Nigerian Islamist extremist group Boko Haram. (Boko Haram/ AFP)
Witnesses say Islamic extremists have abducted 60 more girls and women and 31 boys from villages in northeast Nigeria.
Security forces denied the kidnappings. Nigeria's government and military have been widely criticised for their slow response to the abductions of more than 200 schoolgirls who were kidnapped on 15 April.
There was no way to safely and independently confirm the report from Kummabza, 150km from Maiduguri, capital of Borno state and headquarters of a military state of emergency that has failed to curtail near-daily attacks by Boko Haram fighters.
Aji Khalil, of a local anti-Boko Haram group, said on Tuesday the abductions took place on Saturday in an attack in which four villagers were killed.
Boko Haram has been demanding the release of detained members in exchange for its hostages.