UPDATED: 1:10 pm.
At approximately 11:07 a.m. on Friday, smoke could be seen emerging from the Fogg Art Museum, which is currently undergoing renovations. Crowds of people were standing outside the building and firefighters were responding to the scene.
A construction worker at the museum said that there was a fire. Another construction worker reported that the fire was simply a small ignition and that it was out by the time the fire department arrived. The evacuation, he said, was procedural. Fire trucks are no longer at the scene.
—Monika L. S. Robbins and Magdalena Kala contributed to the reporting of this story.