Nigeria's air force today said it had lost another helicopter in the restive northeast, after Boko Haram rebels raided two more towns and vigilantes and hunters clawed back a key militant stronghold.
The second crash in a week happened late yesterday in Yola, the capital of Adamawa, which is one of three states that has been under emergency rule since May last year.
While there was no immediate indication that the armed Islamist movement was responsible for the crash, there has been an increase in Boko Haram activity in the state in recent weeks.
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Boko Haram has reportedly taken over more than two dozen towns in Adamawa, Borno and Yobe states, including the commercial hub of Mubi, some 200 kilometers (125 miles) from Yola.
Last week, the extremists, who have been waging a five-year insurgency to create a hardline Islamic state, renamed Mubi "Madinatul Islam" or "City of Islam" in Arabic, residents said.
Nigeria's chief of army staff, Major General Kenneth Minimah, told a Senate defence committee yesterday that the loss of territory was "painful" but promised that troops would recapture lost ground.
Locals and a government official said later that about 200 vigilantes and hunters armed with home-made guns, spears, clubs, bows and arrows, and machetes took back Mubi.
"It is true Mubi has fallen back into the hands of Nigerian soldiers with the help of local vigilantes and hunters," Chibado Bobi, chief of staff in the Adamawa state governor's office, told AFP.
"It is however too early for residents who fled to move back to Mubi because the security and vigilantes need to mop up all remnants of the group that may be lurking in nearby areas."
Boko Haram had introduced its strict version of Islamic law in the town, including amputations for accused thieves, according to residents who fled.
The hunters captured the Boko Haram-appointed emir, or leader, of Mubi after the attack, while militant fighters fled.
But instead of being pushed back to other territory it is reported to control, locals said Boko Haram invaded Hong, 50 kilometers (30 miles) south on the way towards Yola, and Gombi, to the northwest of Mubi.
In both Hong and Gombi, the militants were said to have razed the towns' police stations.
The move towards Yola will raise concerns about safety in the city, where thousands of people have taken refuge to escape the violence.
