Chad's leader has called for the urgent creation of a regional force to tackle Nigerian Boko Haram militants.
The Islamist group operates in northern Nigeria, but
President Idriss Deby said it was posing a threat to its neighbours
around Lake Chad."Our basin is exposed to insecurity because of the permanent threat posed by Boko Haram," he said.
Nigeria has been struggling to contain attacks by the militants who want to impose Islamic law in the country.
On Monday, a suicide attack on a police station in Taraba state, which borders Cameroon, killed at least 11 people. No-one has claimed responsibility for the bombing, but Boko Haram militants have carried out many similar attacks.
