Though they apparently were authorized to transport passengers in Niteroi and neighboring Sao Goncalo, the suspects were not allowed to operate the van in Rio, he said.
"We want to prove to people that with new technologies it is easier to keep older people living at home, even if they are a bit dependent, " exhibition organizer Goncalo Areia told AFP.
Marta Dominguez, head of a police unit for female victims in the city of Niteroi was replaced for failing to investigate that case properly, while Martha Pereira, an investigator in nearby Sao Goncalo, was ousted for not helping the Brazilian victim fast enough.