Journalist Ruben Espinosa murder - Mexico City mayor pledges full investigation
No expense will be spared and no line of investigation ignored in the hunt for the killers of four women and a photojournalist, who had fled the state where he worked fearing for his safety, Mexico City's mayor said.
"We are all outraged by this crime," Mayor Miguel Angel Mancera said. "There will be no impunity in this matter. No line of investigation will be discarded."
The United Nations High Commission on Human Rights condemned the killings, saying the bodies had signs of torture and sexual violence and that the climate of impunity "is one of the obstacles to practising freedom of expression in Mexico".
Journalist protection groups have expressed fears that authorities will not consider the killing of Ruben Espinosa, 31, as being related to his work, even though colleagues say he had fled his work in Veracruz state out of fear.
The office of the capital's chief prosecutor said that investigators had found a red Ford Mustang linked to one of the victims abandoned in a neighbourhood to the south. They believe it belonged to a 29-year-old woman who they think is Colombian but have not identified yet.