Firefighters were called to put out a blaze in a brownstone in Park Slope this afternoon. The fire started around 12:30 p.m. on the top floor of a building on 7th Avenue between 2nd and 3rd Street. It is believed to be at 196 7th Avenue, and the fire may have emanated from the roof. We'll update as we learn more info. In the meantime, check out some tweets from onlookers below.