UN Secretary-General Ban Ki-moon has condemned Sudan's bombardment of a border area in South Sudan.
Ban called on "the government of Sudan to cease all hostilities immediately", saying there could be no military solution" to the two countries' simmering border dispute.
Sudanese warplanes dropped bombs near the South Sudanese town of Bentiu yesterday witnesses said.
Earlier, Sudanese leader Omar al-Bashir ruled out talks with South Sudan.
Bashir was speaking while visiting the oil field and border town of Heglig, which South Sudanese troops had occupied for nearly two weeks.
South Sudan says its forces withdrew from Heglig, but Sudan says it expelled them, killing 1,000 soldiers.