ACAPULCO, Mexico – Mexican officials say gunmen attacked a newspaper office in the resort city of Acapulco, spraying the building with bullets but causing no injuries.

El Sur newspaper has been a fierce critic of the government of Guerrero state, where Acapulco is located.

El Sur director Juan Angulo says police should investigate possible political motives as well as crime gangs, which have been implicated in dozens of recent attacks on journalists.

Angulo said Thursday that several employees were inside the building, but nobody was hurt.

State police said the gunmen used several different kinds of weapons in the attack late Wednesday.

At least 11 journalists have been killed in Mexico this year.