SACRAMENTO -- Crews fought a two-alarm fire at Grant Union High School in Del Paso Heights Sunday night.
"What I heard was the fire alarm go off and a big pile of smoke going that way and then a huge spark of fire started going up," said Isaiah Wilson, who lives across the street from the school.
The fire department got the call just before 10:30 p.m. Keith Wade, the public information officer with the Sacramento Fire Department, says around 70 to 80 firefighters responded to the late night blaze.
When they arrived at the campus they saw flames consuming a classroom behind the auditorium.
Firefighters say they had a difficult time actually getting to the classroom because they had to park on the street and then sling hose all the way into the center of campus.
"It took them a while to get lines in place because of the far setback of the building and then the water supply was a little ways away too. So it was what we call a long stretch," Wade said.
When firefighters finally got to the school they were able to quickly knock down the blaze and contain the fire to just one classroom.
Officials say flames spread through the attic and neighboring rooms may have some smoke damage.
"One classroom that was affected and it's completely destroyed by fire," Wade told FOX40.
While crews on scene worked to put out the flames, students and neighbors woken up by the blaze lined the street in front of the school.
"We have summer school going on too, so I don't really know if that's going to affect it," said Grant Union High School student Taliyah Irvin.
Many wondered if their classrooms will be repaired by the time classes start again in the fall.
"Hopefully in time for school because we only got like a few weeks, like a month and a half left for school to start," Irvin said.
The cause of the fire is still under investigation. Officials with the Sacramento Fire Department are looking into the incident as a possible arson but they are not releasing any information about a suspect yet.