MAIDUGURI, Nigeria -- When men wearing military fatigues and carrying weapons showed up in pickup trucks, villagers thought that Nigerian soldiers had finally arrived to protect them from Boko Haram.
But it was a disguise. The gunmen rounded up everyone in the village center and then started shooting.
Altogether, Boko Haram militants slaughtered hundreds of people in three villages in the far northeast corner of Nigeria, witnesses said Thursday, describing the latest attack by the Islamic extremist group that drew international attention for its kidnapping of more than 300 schoolgirls.
A community leader who witnessed the killings Monday said residents had pleaded for the military to send soldiers to protect the area after they heard that militants were about to attack.
The militants arrived in Toyota HiLux pickup trucks -- commonly used by the military -- and told the civilians that they were soldiers, and that they had come "to protect you all" -- the same tactic used by the group when they kidnapped the girls April 15 from a school in the town of Chibok.
"We all thought they were the soldiers whom we earlier reported to that the insurgents might attack us," said the community leader, who spoke on condition of anonymity because he feared for his life.
After the militants forced everyone into the village centers, "they began to shout 'Allahu akbar, Allahu akbar,' then they started to fire at the people continuously for a very long time, until all who had gathered were dead," he said. Allahu akbar means God is great.
The killings took place in the villages of Danjara, Agapalwa and Antagara, part of Gwoza district in Borno state.
The community leader said he fled to Maiduguri, the Borno state capital, adding that some who escaped the massacre crossed into the neighboring country of Cameroon, while others remain trapped in the mountainous region.
"They still see the gunmen going about attacking villages and hamlets by setting them on fire," he said.
He said managed to survive because "I was going around to inform people that the soldiers had come, and they wanted to address us."
As people were fleeing, other gunmen lurked outside the villages on motorcycles and mowed them down.