(Breaking News) - The rivaling parties in South Sudan have signed a new peace agreement, but president Kiir will only sign within 15 days while he remains having reservations, the mediators told the press.

Radio Tamazuj initially reported a new peace agreement as IGAD had announced, but instead only the Secretary General of the SPLM, Pagan Amum on behalf of the former detainees, and the former vice-president Riek Machar on behalf of the SPLM in Opposition have signed. President Salva Kiir did not sign the agreement himself. According to IGAD sources he might sign only within 15 days.

The mediator says that the 'signing is a great stride in peace process in South Sudan' and he was grateful for Kiir 'witnessing' signing. It has become uncertain what the impact of the agreement will remain as the main party now has not committed to the peace deal. 

It is the second official peace agreement since the civil war started in December 2013. The parties also signed several times a recommitment to the Cessation of Hostilities Agreement but none of the parties kept the deal.

South Sudan's government announced on Sunday its readiness to sign a new version of the IGAD mediators, though Kiir himself explained his reservation before leaving Juba. The final agreement has not been published. In the latest version of the peace deal, Machar will not have a clear majority anymore in the three states of Unity, Upper Nile and Jonglei contrary to the first draft.

It is unclear how long the armies of the SPLM headed by president and the troops of Riek Machar will remain separated. Some diplomats mentioned 12 months from signing, but several divisions of the opposition have announced separation from Machar. So it will remain unclear how the agreement will be implemented.

Earlier today Kiir and Machar had both left the face to face negotiation table. It had been reported that Kiir was in consultation with Kenyan president Uhuru. Both leaders have been consulting with their own delegations. Observers at the peace talks say the body language of both Salva Kiir and Riek Machar and the walking out of Sudanese president Bashir and Ugandese president Museveni are not good signs. Igad is expected to hold a press conference shortly.

Pictures: Emmanuel Igunza BBC