A fire broke out in a second floor classroom at Anacostia Senior High School, located at 1601 16th Street SE, this morning.

Firefighters were called to the scene at just before 10:30 a.m. The fire was quickly contained, but not before causing an estimated $25,000 in damages, according to D.C. fire department spokesperson Pete Piringer. The school, which was in use at the time by a number of summer school students, teachers and construction workers, was evacuated. No injuries resulted from the blaze.

Fire investigators were called to the scene, and it’s now being described as appearing to have been intentionally set. Investigators are questioning a juvenile person of interest in the case.