SAN FRANCISCO (KRON) — One person died after a one-alarm fire in the Potrero Hill neighborhood on Wednesday, according to the San Francisco Fire Department.

Crews on scene stated that the three original victims were located after they had self-rescued; they were determined to be OK and did not require aid. During the fire, crews found one adult occupant inside of the building. That person died from their injuries, according to an update from SFFD.

SFFD is still determining the cause of the fire. People are being asked to avoid the area.