A group of unknown gunmen killed four members of the same family; a woman, husband and their two children in a suburb of Manyang-Ngok in Tonj.
According to Donbosco radio, the acting Secretary General Maluach Garang Maluach says the incident happened over the weekend at night.
He adds the deceased were killed at 3:00 AM by unidentified murderers.
The acting secretary general mentions that investigation is ongoing to identify the perpetrators.
In a related incident the official reveals that on Monday a boda-boda rider carrying three passengers was attacked on the way to Manyang-Ngok County and one person was killed.
The acting secretary general calls on the public to remain calm as authorities continue to address issues of insecurity in the area.
The official made the remarks to Don Bosco Radio in Tonj.