Salva Kiir

Kiir signed the agreement in Juba, South Sudan's capital, in a ceremony witnessed by regional leaders. Kiir said he was signing the document despite having serious reservations. He signed the same agreement endorsed by rebel leader Riek Machar, said Kiir's spokesman Ateny Wek Ateny.

Julius Kilong Ramoi said Thursday his son, Peter Julius Moi, a reporter for the Corporate Weekly, was shot twice in the back Wednesday night. 

The international Journalists' rights group Committee to Project Journalist quoted Kiir as threatening journalists on Sunday. Moi was shot dead near South Sudan's only brewery which had been the subject articles he had written recently.

Moi is the seventh journalist to be killed in South Sudan this year.

Kiir said he needs 15 days before he will sign the agreement with rebel leader Riek Machar, according to mediators in the Ethiopian capital of Addis Ababa. Machar signed the accord before Kiir refused.

Some South Sudanese women who participated in the negotiations were seen crying after Kiir said he would not sign. Others banged tables to express their disappointment.