A fire sparked within the walls of a University of San Diego building Tuesday night.
San Diego fire crews found the reported fire in the 5400 block of Linda Vista Road at about 8:30 p.m.
They say the flames were inside the walls, but they since have been put out.
Investigators later determined workers had been in the building and had left something smoldering between rooms.
The small fire caused about $10,000 in damage, fire officials say.
