UPDATE: Fire Burns Pleasant Hill Senior Living Facility; Injured Resident Rescued From Balcony

PLEASANT HILL (CBS SF) -- A two-alarm fire burned at a senior living facility in Pleasant Hill Thursday afternoon, with firefighters rescuing a victim trapped on a second-floor balcony.

The fire was reported at around 1:15 p.m. at Hookston Senior Homes at 80 W. Hookston Road, just west of Contra Costa Boulevard and Interstate Highway 680.

"How quickly that went from one apartment to the whole thing; burned it so fast," said Anjana Ahlborn, a witness who was at the complex visiting a friend.

Just before 2 p.m., the Contra Costa County Fire Protection District tweeted that fire had been knocked down and three victims were rescued from balconies.

A subsequent tweet said one victim had been rescued from a balcony and hospitalized with smoke inhalation and minor burn injuries. All other residents were safely evacuated and there were no additional injuries, Con Fire said.

"It was a fire fortunately in an unoccupied unit on the second floor of one of the several buildings here," said fire district spokesman Steve Hill. "Unfortunately, as a result of the fire there were a number of people that were impacted and evacuated because of the smoke in the hallways."

Hill also provided details about the rescue of the one injured resident.

"We did rescue one individual from a balcony," he explained. "That person had attempted to evacuate through the hallway and in the process had suffered smoke inhalation and burn injuries, and we transported him to the hospital by ground."

One resident described the scene after smelling smoke and going out to take a look.

"So I grabbed my dog and my mask and went out to investigate and walked over to where people were starting to congregate and sure enough you could see the second-floor building patio on fire flames coming out and just a lot of black smoke," said Janice Trode.

The fire was determined by investigators to have been electrical in nature, Con Fire said.

"We dodged a bullet here today and that was in large part due to the call to bring in additional resources for the second alarm," Hill added.

There was no word on the condition of the rescued victim.