An international peacekeeping mission says Sudan's army has carried out air strikes against two villages in the troubled western Darfur region.

The U.N.-African Union peacekeepers say Sudanese forces carried out the strikes against the villages of Labado and Esheraya on Sunday.

A statement from the peacekeeping mission says it's deeply concerned by the attacks and that it is sending teams to the area to determine if there were any casualties.

Sudan's army denied waging any attacks. The daily al Sahafa newspaper on Tuesday quoted army spokesman Col. Sawarmy Khalid as saying that no fighting has taken place recently in the area.

Darfur has been in turmoil since fighting broke out in 2003 between ethnic African rebels and the government and Arab militias.