Authorities in southern Mexico say assailants doused three government offices with gasoline and set them ablaze.
Guerrero state police say no one was in the offices, which were all housed in the same building in the state capital of Chilpancingo.
A police statement issued Tuesday says the fire destroyed documents and computer equipment at offices of the health department, the interior department and a federal government health insurance program.
The fire happened Monday night.
A motive for the attack has not been determined.