Cueibet County Commissioner in Lakes State visited Tonj South County in Warrap State on Wednesday.
Isaac Mayom Malek said the visit was to make peace and reconciliation between Warrap and Lake States, Don Bosco Radio reported.
He recalled a meeting in Cueibet County last year where the two states agreed to stop cattle raiding.
Mr Malek said after the peace conference raiders from Tonj attack Kubungab area and killed six people.
He added that one soldier from Division six was killed in Manyangok payam of Tonj South County.