The Washington Post reports that there was a fire at the Phillips Collection:

There was no major damage to the collection, according to museum spokeswoman Cecilia Wagner, and nobody was injured in the fire. “All artwork is safe and secure,” she said in a statement. “Museum conservators are currently evaluating the artwork, but nothing has incurred significant damage.” […]

Fire alarms went off at the building, located at 1600 21st Street NW, around 8:30 a.m. according to D.C. Fire Department spokesman Pete Piringer. A small fire broke out on the roof and in the ceiling of the top floor of the four-story building, Piringer said. The cause is still under investigation, Piringer said, but the building is under renovation and investigators believe welding work may be the culprit.

Fire at Phillips Art Being Moved (Washington Post)