According to Vesti, the bloodshed provoked by the conflict over land use began last Saturday in the village of Kharaja.
"The reason for the confrontation was a dispute over the ownership of the agricultural land," the statement said.
The land was claimed by both local sedentary farmers and Arab shepherds.
The opposing sides, unable to resolve the matter peacefully, took up arms. The battle lasted for several hours.
The clashes became so fierce that the authorities had to bring troops into the hot spot.
The security forces detained several "instigators" and participants in the bloodshed.
Chad is one of the poorest countries in the world, ranking 164th in the GDP to purchasing power ratio. The state is characterized by great ethnic and cultural diversity, a high level of internal contradictions and corruption. In April, President Idris Debi was assassinated in a rebel conspiracy immediately after Chad's election victory. He was re-elected for a sixth term.