FRESNO, Calif. (KFSN) -- Authorities are investigating what sparked a fire at the Sanger Unified administration building on Monday morning.
The fire was reported just before 4:00 am on Seventh Street near Hoag.
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Firefighters say a door to the building was damaged with light smoke going into the office. The smoke was blown out by fire crews.
A person was detained at the scene, but it's unclear if they were connected to the fire.
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In a message from the district, officials said services in the building are temporarily "inaccessible" while firefighters conduct an arson investigation.