"Iran condemns the recent terrorist attacks of the Boko Haram terrorist group and the massacre of innocent civilians by this group," Afkham said.

She expressed sympathy for the families of those killed by the terrorist group, and said that the rise of extremism and terrorism poses a joint threat to the entire world, and underlined the need for efforts by all countries to fight the inhuman phenomena.

Boko Haram Takfiri group waged fresh attacks in Northeastern Nigeria, killing and injuring dozens of people.

Takfiri militants have launched multiple attacks in restive Borno state since Wednesday, with people attending evening prayers during the holy month of Ramadan gunned down, women shot at home, and men dragged from their homes in the dead of night.

A young female suicide bomber also killed 12 worshippers when she blew herself up in a mosque in Borno and while there was no immediate claim of responsibility, Boko Haram has used both men and young women and girls as human bombs in the past.

The wave of attacks, which took place over less than 36 hours, is the bloodiest since President Buhari came to power in May, vowing to root out the insurgency that has claimed more than 15,000 lives.

News of the violence first emerged on Thursday, when survivors described raids on three different villages in Borno the previous evening that left at least 145 people killed and houses burnt to the ground.

On Friday, fresh details of these killings emerged from a resident of Kukawa, the worst-affected village.

Less than 24 hours later, a girl blew herself up in a mosque in Malari village, more than 150 kilometers away from Wednesday's attacks.

"The bomber was a girl aged around 15 who was seen around the mosque when worshippers were preparing for the afternoon prayers," Danlami Ajaokuta, a vigilante assisting the military against Boko Haram, said.

"People asked her to leave because she had no business there and they were not comfortable with her in view of the spate of suicide attacks by female Boko Haram members.

"She was made to leave but while the people were inside the mosque for the prayers she ran from a distance into the mosque and blew herself up," he added -- an account corroborated by resident Gajimi Mala.

And early Friday morning, as people were sleeping, Boko Haram militants dragged men out of houses in Miringa village and shot them for escaping forced conscription.

They "picked 13 men from selected homes and took them to the Eid prayer ground outside the village where they opened fire on them," resident Baballe Mohammed said, adding 11 died and two managed to escape.

He and another resident said the victims had been targeted because they had fled their home village after Boko Haram tried to force them to join their ranks.