The two rival generals fighting in Sudan agreed to a seven-day truce starting on Thursday and will name representatives to peace talks, according to the foreign ministry of South Sudan, which has been working with other neighboring countries to negotiate an end to a conflict that has sent more than 100,000 refugees pouring across their borders in a few weeks.

There was no immediate public confirmation, however, that an agreement had been reached from either side in the conflict between the Sudanese Army, led by Gen. Abdel Fattah al-Burhan, and the paramilitary Rapid Support Forces, led by Lt. Gen. Mohamed Hamdan. And no date has been set yet for negotiations to begin, South Sudan’s foreign ministry added in a statement.

The United Nations has also been pressing for peace talks, and a spokesman, Farhan Haq, was cautious about South Sudan’s statement on Tuesday. Mr. Haq, deputy spokesman for the U.N. secretary general, said at a briefing: “We would certainly welcome any lasting meaningful truce. First, of course, we will have to see whether this is accepted by all the parties and whether it is implemented by the forces on the ground.”

The fighting has persisted despite previous cease-fires and threatens to undermine regional stability. More than 300,000 people have been internally displaced, in addition to the more than 100,000 who have fled, mostly into Chad, South Sudan, Egypt, Ethiopia and the Central African Republic, according to figures released by United Nations agencies on Tuesday.