FRESNO, Calif. (KFSN) — Investigators are trying to determine what started a fire in downtown Fresno Friday morning.

One person had to be rescued from the burning house.

First responders were called to Cedar and Grant avenues shortly after 10 a.m.

The house was ravaged by flames.

A woman was trapped on an enclosed courtyard patio, but a firefighter managed to help her to safety.

She was being evaluated for possible injuries.

The extent of the damage to the house is unknown