The presidents of Sudan and South Sudan are meeting Saturday in Addis Ababa for a second day of talks to discuss issues holding up crucial security and economic deals.
Sudan's Omar al-Bashir and South Sudan's Salva Kiir, along with other delegates, were joined by African Union mediator Thabo Mbeki in Saturday's talks.
The two Sudanese leaders had a working dinner with their host, Ethiopian Prime Minister Hailemariam Desalegn on Friday.
While there has been no release of what has been discussed, the leaders were widely expected to talk about a demilitarized border zone the two Sudans agreed to in September.
Disputes over oil and borders nearly sparked a full-scale war between the two Sudans last April. The September agreements called for both countries to withdraw their troops at least 10 kilometers from the border.
Oil produced in South Sudan cannot resume flowing through Sudan's pipelines until the deals are implemented. The lack of oil revenue has damaged both countries' economies.