Some 70 people marched Saturday demanding information about where the body is located of Amarildo de Souza, a builder allegedly tortured and slain by Rio de Janeiro police and whose disappearance is seen as symbolic of this country.

Demonstrators marched down a number of streets in Rocinha, the biggest "favela," or shantytown, in the Brazilian city of Rio de Janeiro and where the builder disappeared July 14 after being run in by the cops.

Up to now investigators have sought arrest warrants for 25 police accused of torturing the worker until he died in a police station, and of having hidden the body.

Demonstrations over the way Amarildo went missing coincided with the protests for better public services that have shaken Brazil since June, and in some marches his disappearance became one more cause for rage.

The Amarildo case, which has mobilized thousands of people, particularly in Rio de Janeiro, has also been used as a stark reminder about the almost 35,000 people that have gone missing since 2007 in the Brazilian state of Rio de Janeiro.

The disappearance is considered symbolic by many, particularly because it is attributed to agents of one of the new police units established to "pacify" the shantytowns of Rio de Janeiro that were formerly controlled by gangs of drug traffickers.

The policy of "pacifying" the favelas currently benefits close to 30 shantytowns where organized crime once acted with impunity and from where the gangs were ousted with the help of the army and armored military units.

The president of the Rio de Paz organization, Antonio Carlos Costa, said the low number of participants in the protest shows how afraid the inhabitants of Rocinha are to criticize the police. EFE