The gunmen, five of whom were also killed, razed a police station and a military camp during the late Sunday attack in the restive region, which has been among the hardest hit areas during Boko Haram's five-year uprising.
"The gunmen split into three groups and launched simultaneous attacks on the military camp, the police station and other buildings in the village," said Abor Grema, a resident of the targeted Krenuwa village in Marte district.
Marte was one of the areas in Borno state where Boko Haram chased out the government last year, forcing President Goodluck Jonathan to declare a state of emergency in the region while launching a military offensive to crush the uprising.
His account was supported by other witnesses including Musa Bulama, who said the gunmen torched homes, a police station, a military camp, homes and shops.
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"Five of (the Islamists) were killed and five others were captured," during fierce gun battles that followed the raid, according to Bulama.
A vigilante was "dragged from his home and slaughtered... on the streets" by extremists who returned to Krenuwa later in the night to seek revenge against locals who had fought with the military.