Six men and a boy have been charged with raping a 16-year-old girl and posting videos and pictures of her on the internet, Rio de Janeiro police say.
The case has sparked a debate about sexism and violence in Brazil and added to security concerns ahead of Rio's hosting of the Summer Olympics in August.
The lead investigator in the case, which has shocked Brazilians, Cristiana Bento, sent her conclusions to Brazilian prosecutors on Friday.
She asked for the arrest of all seven people charged.
The high-profile case came to light after a video was posted on Twitter shortly after the alleged May 21 incident.
In the clip the semi-conscious naked teen is seen on a bed as men hurl insults and boast that dozens had raped her.
One of the men charged is Ra de Souza, whose mobile phone provided access to videos and photos used in the investigation. That has led to charges against the others who remain at large, the police said.
Bento said information collected so far did not support the victim's allegation that up to 33 men had taken part in the gang rape.
