Yei Mayor condemns the killing of about six travellers by gunmen along Lainya-Juba road on Saturday.
Santo Paul Lasuba says three bodies have been received, Radio Easter reports.
Three other bodies are still lying in bush, he says.
He adds that a force has been sent to see the three remaining bodies.
Mayor Paul appeals to South Sudanese to stop inhumane practices of slaughtering people like goats and chickens.
Yei Catholic Bishop Erkolano Lodu Tombe urges perpetrators to stop the attitude of being angry and bitter.
The leaders made the remarks at Christ the King Cathedral on Sunday.