The African Union says gunmen in Sudan's troubled Darfur region have killed another A.U. peacekeeper.

An A.U. spokesman says the unidentified attackers shot the peacekeeper and stole his vehicle late Saturday near the entrance of an A.U. compound in Al-Fasher, the capital of North Darfur state. The nationality of the dead peacekeeper was not disclosed.

Seven A.U. troops have been killed in Darfur so far this month.

U.S. Deputy Secretary of State John Negroponte had visited the A.U. compound in Al-Fasher Saturday. He is in Sudan to try to persuade the government to permit the deployment of U.N. troops in Darfur.

The 7,000 A.U. peacekeepers currently in Darfur are poorly-equipped and have failed to ease the violence obstructing humanitarian work in the region.

A Rwandan peacekeeper with the A.U. force was shot dead last Tuesday, while gunmen killed five Senegalese peacekeepers on April 1.

Some information for this report provided by AFP and Reuters.