ADDIS ABABA, Sept. 27 (Xinhua) -- Sudan and South Sudan on Thursday signed three agreements of various issues at the conclusion of presidential summit between Sudan's president Omar Hassan Al Bashir of Sudan, and Salva Kiir Mayardit of South Sudan in Addis Ababa, Ethiopia.

The two presidents have been meeting in Addis Ababa since last Sunday to conclude the negotiations by their delegations going on for months on outstanding issues through the mediation of the African Union High Implementation Panel (AUHIP).

The two countries have inked three deals on cooperation, security, and post secession agreements witnessed by the members of AUHIP.

The security agreement was signed by Lieutenant General Abdel Raheem Muhammed Husssein, Defence Minister of Sudan, and General John Kong, Defence Minister of South Sudan, and witnessed by General Abdulsalam Abubakar, former president of Nigeria.

The second deal on post-cessation, which includes border issues, economic matters of oil and trade related issues among others, was signed by the lead negotiators Idris Abdel Gadir of Sudan, and Pagan Amum of South Sudan.

President Al-Bashir and his South Sudanese counterpart Salva Kiir have signed the cooperation agreement, which is said to summarize the principles and institutions the two countries will cooperate on all areas.

Both presidents hailed the event of the signing a historic moment.