NEW : Talks are expected to start July , representative of mediating bloc says . The army is battling rebel forces south of South Sudan 's , a military spokesman says . Kiir , from South Sudan 's Dinka ethnic group , accused troops loyal to Machar , from the Nuer community , of trying to launch a coup . Bor president has declared a state of emergency in Unity and U.N states . A Jonglei envoy calls on warring parties to `` take a decisive step to cease all hostilities ''
NEW : Talks are expected to start July , representative of mediating bloc says . The army is battling rebel forces south of South Sudan 's , a military spokesman says . Bor president has declared a state of emergency in Unity and U.N states . A Jonglei envoy calls on warring parties to `` take a decisive step to cease all hostilities ''