Two of the three brothers involved in the crime, aged 22 and 28, were arrested on Sunday by members of the Criminal Investigation Service (SIC), in coordination with the National Police in Uíje.
The third is on the run, according to information released by MININT on social networks.
The men attacked their brother, a teacher, with a knife after heading to his home in zone 3 of the Mbemba Ngango neighborhood.
At the scene, a fight was reported and the victim was stabbed several times, with the man having immediate death.
Then the attackers took the body and inserted it into a tire, which they watered with gasoline and charred.
The SIC removed the body to the morgue of the Hospital Geral do Uíge and continues the efforts to locate and detain the other brother.