A Boko Haram flag flutters from an abandoned command post in Gamboru deserted after Chadian troops chased them from the border town on February 4, 2015. Nigerian Boko Haram fighters went on the rampage in the Cameroonian border town of Fotokol, massacring dozens of civilians and torching a mosque before being repelled by regional forces. AFP PHOTO/STEPHANE YAS        (Photo credit should read STEPHANE YAS/AFP/Getty Images)
STEPHANE YAS/AFP/AFP/Getty Images
A Boko Haram flag flutters from an abandoned command post in Gamboru deserted after Chadian troops chased them from the border town on February 4, 2015. Nigerian Boko Haram fighters went on the rampage in the Cameroonian border town of Fotokol, massacring dozens of civilians and torching a mosque before being repelled by regional forces. AFP PHOTO/STEPHANE YAS (Photo credit should read STEPHANE YAS/AFP/Getty Images)
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Aishat Alhaji , one of the kidnapped girls from the Government Girls Science and Technical College Dapchi who was freed, is photographed after her release, in Dapchi, Nigeria, Wednesday March. 21, 2018. Witnesses say Boko Haram militants have returned an unknown number of the 110 girls who were abducted from their Nigeria school a month ago. (AP Photo/Jossy Ola)
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Soldiers stand guard at a market in N'Djamena following a suicide bomb attack on July 11, 2015. At least 14 people were killed in a suicide bomb attack at a crowded market in Chad's capital today just days after Boko Haram claimed a previous bombing in the city that left 38 people dead. The attack in N'Djamena by a man disguised as a woman in a full-face veil came after a botched bombing of a bus station in the restive capital of Nigeria's Borno state, Maiduguri, which killed two pedestrians.  AFP PHOTO / BRAHIM ADJI        (Photo credit should read BRAHIM ADJI/AFP/Getty Images)
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A screengrab taken on May 12, 2014, from a video of Nigerian Islamist extremist group Boko Haram obtained by AFP shows girls, wearing the full-length hijab and praying in an undisclosed rural location. Boko Haram released a new video on claiming to show the missing Nigerian schoolgirls, alleging they had converted to Islam and would not be released until all militant prisoners were freed.  A total of 276 girls were abducted on April 14 from the northeastern town of Chibok, in Borno state, which has a sizeable Christian community. Some 223 are still missing. AFP PHOTO / BOKO HARAM 
RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / BOKO HARAM" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTSHO/AFP/Getty Images
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A screengrab taken on May 12, 2014, from a video of Nigerian Islamist extremist group Boko Haram obtained by AFP shows girls, wearing the full-length hijab and praying in an undisclosed rural location. Boko Haram released a new video on claiming to show the missing Nigerian schoolgirls, alleging they had converted to Islam and would not be released until all militant prisoners were freed. A total of 276 girls were abducted on April 14 from the northeastern town of Chibok, in Borno state, which has a sizeable Christian community. Some 223 are still missing. AFP PHOTO / BOKO HARAM RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / BOKO HARAM" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTSHO/AFP/Getty Images
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(CNN) —  

An international aid agency has been shut down in Nigeria after army bosses accused it of “aiding and abetting” terrorists in the country’s war-torn northeast region.

Military spokesman Ado Isa said Action Against Hunger gave food and drugs to Boko Haram fighters, despite several warnings from the army not to do so.

The army declared the NGO “persona non grata” claiming it had credible evidence from its troops that the charity did not heed its orders.

“The subversive and (sic) actions of the NGO Action Against Hunger persisted despite several warnings to desist from aiding and abetting terrorists and their atrocities,” Isa said in a statement on Thursday.

However, Action Against Hunger said it was given no notice or reason before the closure of its office in the Maiduguri capital of Borno state, the epicenter of deadly Boko Haram attacks.

A statement by the NGO said it focuses on delivering “neutral, impartial and independent” aid to vulnerable groups, especially women and children, and the military’s actions jeopardize its efforts and it will appeal the decision.

“Action Against Hunger calls on the competent authorities to let us continue our work in the region,” the agency said.

The charity did not address the allegations and said it would make no further comment in a statement posted on its website.

Nigeria’s army has been previously embroiled in disputes with NGOs working in the country’s troubled northeast, where terrorist networks continue to stage deadly attacks, accusing them of undermining efforts to fight terrorism.

UNICEF activities were briefly suspended by the military last December over allegations its staff were training terrorists in the region.

The Nigerian government and the army also accused Amnesty International Nigeria of fabricating allegations of human rights violations against its troops in the northeast. Both NGOs have denied the allegations.

Boko Haram militants have been fighting for more than a decade in Nigeria’s north east. They have targeted communities, and bombed public places such as markets and places of worship.

The military has also suffered casualties, despite claims by the Nigerian government that the insurgent group has been largely defeated.