Firefighters are battling a blaze on the roof of the Vittoria Trattoria restaurant in the historic ByWard Market.
The fire at 35 William St. was reported just before 11:30 a.m. this morning and has reached a third alarm.
By 11:50 a.m., firefighters were being called off the roof and out of the building due to “rapidly deteriorating conditions,” according to fire department photographer Scott Stilborn.
The flames were spreading through the roofs of attached buildings, which have been evacuated.
There have been no reports of injuries.