Gunmen overran a police headquarters and a government building in northeastern Nigeria early Thursday, killing four people, including two civilians, officials said.

International diplomats are meeting Thursday in Gabon for talks aimed at resolving a brewing crisis in the Central African Republic, where rebels are threatening the capital.

Bonobos are known for their peace-loving ways, but their very existence is threatened by conflict and deforestation.

Two U.N. peacekeepers have been freed in the Darfur region of Sudan more than four months after they were abducted while on patrol, the United Nations said.