Two of Mexico's largest newspaper groups say they have stopped running most of the sex ads that once blanketed the back pages of popular tabloids.
The newspaper El Universal says it has banned "ads that could be used by traffickers of people." It is part of an effort to combat what experts call a huge problem of exploitation of women and children in Mexico.
The newspaper Reforma also says it has canceled sex ads.
Both paper's tabloid editions on Tuesday continued to run ads for what appear to sexually oriented phone chat services, but escort-style ads had disappeared.
Neither paper specified what guidelines they were applying in the ban, and some other papers continued to run escort ads.