Mass grave in South Sudan -- the United Nations reported the discovery of a mass grave of 34 in a rebel-controlled city in South Sudan on Tuesday. 

In the center of the outbreak of violence and war of ethnic nature in South Sudan, representatives from the United Nations chanced upon a grave of 34 bodies in one of the rebel-controlled cities. The U.N. confirmed Tuesday that this could be the opening they were looking for to negotiate and avert upcoming civil war in the world's newest nation.

The bodies were discovered in an area called Bentiu. One of the graves contained 14 bodies and another site close by was filled with 20 bodies, confirmed Ravina Shamdasani, spokeswoman of the United Nations human rights office.

Michael Makuei Lueth, the government minister of information, shared that Bentiu is currently bieng held and controlled by rebels working under the former vice president of South Sudan, Riek Machar. The minister also pointed out that they were likely responsible for the murder of the people buried in the mass grave.

The bodies found in the mass have been identified as ethnic Dinka who followed the Liberation Army of the Sudan People, confirmed Shamdasani, pointing out government military forces. 

Current South Sudan president Salva Kiir is known to be of Dinka descent while Machar is Nuer.

John Kerry, the U.S. Secretary of State, exchanged a conversation with Machar over the phone on Tuesday, Machar informing Kerry that he plans to start negotiations with President Kiir soon. The talks may take place in Ethiopia, added Machar. 

"I will form a high-level delegation, to which I will give full power to negotiate an accord," former vice president Machar shared to Radio France Internationale during an interview. "We want Salva Kiir to quit power. We want a democratic nation and free and fair elections."