Gunmen killed a municipal employee in the northern city of Cadereyta who also wrote for a small weekly newspaper, Mexican authorities said Sunday.
Cadereyta is near Monterrey, the country's third-largest city and an area in Nuevo Leon state that has been plagued by drug gang violence.
A spokesman for the state detectives agency said the victim, Raul Garza Quirino, was driving a brand new car when he was shot late Friday.
The spokesman, who was not authorized to be quoted by name, said the gunmen may have mistaken him for a rival or wanted the car. Wounded or perhaps already dead, the victim crashed the car into the front of a mechanic's shop owned by relatives.
Garza Quirino worked as Cadereyta city social development secretary. He also wrote for the weekly La Ultima Palabra (The Last Word). The paper's online edition contained no reference to his death, and no one answered phones at the paper Sunday.
Mexico's National Human Rights Commission says nine journalists were killed in Mexico in 2011, but press groups differ on the definition of who is a journalist in Mexico's homicide figures.
The New York-based Committee to Protect Journalists says seven journalists and one media employee were slain in Mexico last year. It says the motives in about half the killings are still unclear.