Islamic extremists have abducted 60 more girls and women and 31 boys from villages in northeast Nigeria, witnesses said Tuesday, June 24, according to the Associated Press.

Security forces denied the kidnappings. Nigeria's government and military have attracted widespread criticism for their slow response to the abductions of more than 200 schoolgirls kidnapped April 15.

The AP says there was no way to safely and independently confirm the report from Kummabza, 150 kilometers (95 miles) 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.

A Kummabza resident said Tuesday the abductions took place Saturday in an attack in which four villagers were killed.

A senior local councilor from the village's Damboa local government told the AP that abductions had occurred but requested anonymity because he was not authorized to give information to reporters. He said elderly survivors of the attack had walked some 25 kilometers (15 miles) to the relative safety of other villages.

The Damboa council secretary, Modu Mustapha, said he could not confirm or deny the abductions and directed a reporter to the council chairman, Alamin Mohammed, who did not answer phone calls or respond to text messages, the AP says.

Boko Haram has been demanding the release of detained members in exchange for its hostages but President Goodluck Jonathan has said he will not consider a swap.

Last week, a presidential committee investigating the kidnappings stressed that they did in fact happen and clarified the number of students who have been kidnapped. It said there were 395 students at the school, 119 escaped during the siege of the school, another 57 escaped in the first couple of days of their abduction, leaving 219 unaccounted for.

On Monday, an explosion at a medical college in the northern city of Kano killed at least eight people and wounded 12, police said. It was the third bomb blast in four months in Kano, Nigeria's second city.

Also on Saturday, the same day as the latest abductions, scores of Boko Haram fighters attacked four other villages, near Chibok town from which the girls were kidnapped. Witnesses said at least 33 villagers were killed as well as six vigilantes and about two dozen Boko Haram fighters.