Police arrest three accused of the massacre in Aveiro
A 20, 19 and 16a years old are already in jail at the Civil Police Hq in Itaituba, accused of the massacre occurred in Aveiro: the three have already confessed. One of the murderers even carried the coffin of one of the victims, with no one suspecting he was involved with the crime.
The victims had their throats sliced at gunpoint, one of them begging for their lives, and the youngest of the killers (16) tried to behhead one of the victims (see pics in the OP)
They're still investigating as they suspect that more people are involved.