(KRON) — A fire has been reported Wednesday afternoon in the Nob Hill neighborhood, according to the San Francisco Fire Department (SFFD). Crews responded to a building at 1625 Leavenworth St.

One person was rescued and taken to a burn center, officials said. The unidentified individual was taken to the emergency room and suffered a “critical injury.” A second victim was treated on scene and was released shortly after.

It is unknown exactly how many people were displaced, but SFFD said people in nine of the building’s 27 units were displaced.

As of 2:20 p.m., forward progress on the fire has stopped, and the fire is under control. The second and third floor of the building was damaged, according to SFFD.

The fire first broke out at 1:38 p.m. and was contained one hour later, according to SFFD. It was originally reported to be a one-alarm fire but has since grown to two alarms.

The cause of the fire is still under investigation. The public was asked to avoid the area.

No other information was immediately available.