DAKAR, Senegal – As tension builds up between Anglophone and Francophone regions of Cameroon, Cameroonian troops a few days ago crossed into Nigeria in pursuit of separatists and rebels without seeking authorization from Nigeria government.

So far, one incursion was confirmed by a Nigerian government official, two Nigerian military officers and two foreign diplomats, all of whom spoke on condition of anonymity. m

The country’s security forces were deployed to the border to stop any further crossings, said a military source.

The Cameroonian and Nigerian governments said in separate statements there were no incursions. Relations between the two countries are good, Cameroon said.

Military officials and pro-government media sources familiar with the matter have accused Nigeria of sheltering Anglophone insurgents.

About 7,000 people have fled as refugees from Anglophone Cameroon to Nigeria following a crackdown ordered this year by President Paul Biya.