Eleven trash cans and dumpsters were set on fire within a one-mile radius. Firefighters believe the apparent arsonist headed south on Highland Avenue, setting fires about every 20 minutes.
While most of the fires were contained to dumpsters or trashcans, officials said at least one fire was next to an apartment building and could have spread quickly. Fire officials said these kinds of calls take up their time and resources.
"When you have four different engine companies running around at trash fires, you're depleting the area totally of fire-suppression resources," said Los Angeles Fire Department Batt. Chief Christopher Kawai.
As of early Friday morning, authorities said they did not have any witnesses or suspects in custody.
Los Angeles police are working with the fire department to catch the person or persons responsible for the fires.