A newspaper in the northern Mexican city of Torreon says it was attacked by armed men early Tuesday.
El Siglo de Torreon's website says at least three men drove up, set fire to the facade of its offices and opened fire at its sales offices.
The paper's assistant editorial director, Javier Garza, says the attack is puzzling because more than a year ago the paper stopped mentioning drug cartels or reporting stories about organized crime. Other media in the nearby border state of Tamaulipas also practice self-censorship.
But Garza says "the media is still vulnerable."
Mexican media organizations and journalists have come under a rising number of attacks in recent years as drug cartels have confronted government forces. El Siglo de Torreon was also attacked in 2009.