Gun and knife-toting assailants on bikes and in vans stormed the remote villages of Yakshari and Kachifa on Friday and Saturday, said Mustapha Karimbe, a local vigilante assisting the military in the fight against Boko Haram terrorists, AFP reported.
"The attackers killed 30 people in two separate attacks on the two villages last night (Friday) and this morning (Saturday)," Karimbe said, adding that they also looted and stole cattle.
The village of Yakshari was attacked at around 9:30 am on Saturday, with the assailants slaughtering 22 residents "by slitting their throats before emptying food stores and taking away all the cattle", he said, speaking from the town of Biu approximately 120 kilometres (75 miles) from the village.
Late Friday evening, meanwhile, Boko Haram terrorists also raided nearby Kachifa village, killing eight people.
"We believe the same gunmen carried out both attacks on the two villages," Karimbe said.
Dozens of people have been killed in Boko Haram attacks in recent weeks near Maiduguri, capital of northeast Borno state, despite President Buhari's December boast that the terrorist group had been more or less defeated.
Since then the terrorists have killed dozens in raids and suicide attacks, including across the border in Cameroon.