The government of the Mexican border state of Tamaulipas says it is investigating the reported disappearance of the editor of a small regional weekly newspaper, almost a week after he was last seen.

Tamaulipas Interior Secretary Morelos Canseco says no formal missing person report has been filed in the case of Mario Segura, director of the Sol del Sur newspaper. But Canseco said Saturday investigators are looking into the Segura's whereabouts.

The Inter-American Press Association issued a statement Saturday calling on Mexico to investigate the disappearance.

Local media reported Segura went missing Monday. No one answered the phone number listed on the newspaper's website.

In July, Mexico's special prosecutor for crimes against journalists said 67 journalists have been killed and 14 have disappeared in the country since 2006.