Mexico City authorities say they have arrested a police officer and another man in connection with the abduction and killing of 12 young people, who were taken in May from a bar near the US Embassy in broad daylight.
Attorney General Rodolfo Rios says the two suspects helped kidnap the group, whose decomposing bodies were found last month buried in a ranch near the capital.
Mr Rios says the police officer worked in the Zona Rosa, a touristy area of bars and restaurants where the 12 were kidnapped.
He said yesterday the latest arrests bring to 15 the number of suspects in custody.
Prosecutors have said they believe the killings were in revenge for the murder of a drug dealer in the trendy Condesa neighbourhood.