South Sudan says Sudanese warplanes have bombed its territory, killing at least one civilian and injuring several others.
Army spokesman Philip Aguer told reporters Wednesday that Sudanese planes bombed the Bahr al Ghazal area of South Sudan, near the countries' shared border, on Tuesday.
The French news agency quotes a Sudanese army spokesman as saying Sudan attacked an area near the border but not in South Sudanese territory. The spokesman said the attack targeted a compound set up by Darfur rebels in al-Regaibat, 40 kilometers north of the border.
The attack comes amid delays in implementing security and oil deals the two Sudans signed in September, after fighting along their disputed border earlier in the year.
The deals call for resumption of southern oil exports through the north, a move that would greatly benefit both economies.
South Sudan shut down all oil production in January after a dispute with Khartoum over how much it pays to use Sudan's pipelines and a port.
The September deal, mediated by the African Union, includes a demilitarized buffer zone at the shared border. But the two nations have not agreed on a way to move their forces back from the unmarked border.
Sudan and South Sudan went to the brink of war in April after the south occupied a northern oilfield. Relations between the two countries have been mostly rocky since the South declared independence last year.