ONITSHA, Nigeria (Reuters) - More than 43,000 Cameroonians have fled as refugees to Nigeria to escape a crackdown by the government on Anglophone separatists, local aid officials said on Thursday.

FILE PHOTO: A still image taken from a video shot on December 9, 2017 shows Cameroonian refugees standing outside a center in Agbokim Waterfalls village, which borders on Cameroon, Nigeria. REUTERS/via Reuters TV

The figure is almost three times as high as that given by the United Nations and Nigerian officials two weeks ago.

Cameroon is a majority French-speaking country but two southwestern regions bordering Nigeria are Anglophone. Last October, separatists declared independence for a state they want to create called Ambazonia, sparking a military crackdown by the government of President Paul Biya.

In Nigeria’s Cross River state, which borders southwest Cameroon, more than 33,000 Cameroonians have taken refuge from violence, John Inaku, director general of the State Emergency Management Agency (SEMA), told Reuters by phone.

In neighboring Benue state, there are 10,216 refugees, said Emmanuel Shior, director general of the regional SEMA.

Earlier this month, the UN refugee agency had said more than 8,000 refugees were in Cross River state.

Explaining the disparity, Inaku told Reuters the UN agency was only registering people in Cross River coming in through conventional routes.

“This is a war situation and refugees are trooping in by the minute through the bush paths, rivers and every other unconventional routes open to them,” he said.

“During our advocacy to our border communities we told them to allow the refugees in and not be hostile to them so our communities have been receiving them warmly and accommodating them. These are very remote areas, hard to reach without good roads,” Inaku said.

Inaku said community facilities were becoming overstretched and so people were getting hostile toward the refugees, who were in “deplorable condition”, hungry and in need of medicine.

The Benue SEMA director general said the agency had also had difficulty counting refugees because they were in remote areas.

Early on Thursday, gunmen crossed from Nigeria to attack a border post in Cameroon’s southwest, security force witnesses said, with the incident likely to further damage relations between the neighbors.

The separatists pose the biggest challenge yet to the 35-year rule of Biya, who will seek re-election this year. The conflict is also fuelling tensions between Nigeria and Cameroon.

Cameroonian military officials and pro-government media accuse Nigeria of sheltering the insurgents, who since last year have waged a guerrilla campaign to establish an independent homeland for Cameroon’s English-speaking minority.