A large fire gutted a building under construction and affected five structures in total in the Hayes Valley neighborhood of San Francisco early Tuesday, August 1, the fire department said.No injuries were reported, the San Francisco Fire Department said; they asked people to avoid the area. The cause of the fire had yet to be determined.Footage by Olivia Warnecke shows what she called the “massive” fire. Credit: Olivia Warnecke via Storyful