Sudanese insurgents have shelled the capital of Sudan's Southern Kordofan state.

Sudanese government radio said the attack on the town of Kadugli killed five people and wounded another 23.

A Sudanese army spokesman, Sawarmi Khalid, said one person, a woman, was killed.

Spokesman Arnu Lodi of the SPLM-North rebel group claimed responsibility for the attack.

The SPLM-North has been fighting the Khartoum government since June of last year. Clashes in Southern Kordofan and Sudan's Blue Nile state have displaced hundreds of thousands of people, with many fleeing to South Sudan.

Sudan accuses its southern neighbor of supporting the rebels, a charge South Sudan denies.

The SPLM-North is an offshoot of the Sudan People's Liberation Army, which fought for the south during Sudan's long civil war.

The war ended in 2005, and South Sudan became independent last year. The two Sudans remain at odds over oil and border issues, though some disputes were settled in an agreement reached late last month.