MAIDUGURI, Nigeria – Boko Haram militants are taking over villages in northeastern Nigeria, killing and terrorizing civilians and political leaders, witnesses say, as the fighters make a comeback from a year-long military offensive aimed at crushing them. Nigeria's military has insisted that the big influx of troops and a year-old state of emergency in three states that cover about one-sixth of the country gives them the power to detain suspects, take over buildings and lock down any area has the extremists on the run. But while Boko Haram has in large part been pushed out of cities in the northeast, they have been seizing villages with thatched-roof huts in the semi-arid region where they once held sway, boldly staking their claim by hoisting their black flags with white Arabic lettering, and making large swaths of Nigeria no-go regions for the military. Nglamuda Ibrahim, a local government official, says the militants hoisted their flags in Ashigashiya, which borders Cameroon, several weeks ago without interference from the security forces. Muhammed Gavva, a member of one of the vigilante groups formed last year, named another dozen villages that also fell to Boko Haram, also close to the Cameroonian border, with no action taken by Nigerian security forces. He said one road to Maiduguri, the capital of Borno state where the military joint task force has its headquarters, is so dangerous that even soldiers don't dare to travel it. “We have long informed the military officials about this. They are aware but we don't know what they are doing about that,” Gavva said. The seized villages are near Gwoza, a regional political center whose emir was killed in a Boko Haram ambush on his convoy last week. Borno Gov. Kashim Shettima traveled on Saturday to Gwoza to pay his respects to the fallen traditional leader and was quoted as saying it was a terrifying ride. “If I say I was not petrified traveling through that ... road to Gwoza I would be lying because that road had been designated a no-go area for about two months now due to the incessant attacks and killings that occur there,” the governor was quoted as saying by Information Nigeria. — AP