A neighbor pounded on a door and alerted a woman that her house was on fire Friday afternoon in a midtown neighborhood.
The woman and two others in the house were able to escape, but a dog and cat were killed, said Capt. Barrett Baker of the Tucson Fire Department.
Another cat survived the blaze and one cat remains missing and presumed dead, Baker said.
Firefighters were dispatched at 12:38 p.m. to the 5800 block of East 18th Street after multiple 911 calls. The neighborhood is north of East 22nd Street and east of South Craycroft Road.
When firefighters arrived, the carport was fully involved in flames and the fire had spread to the attic. Twenty-three firefighters controlled the blaze in 19 minutes, Baker said.
The Southern Arizona Chapter of the American Red Cross was assisting the two women and man who lived at the house, which was condemned by city inspectors, said Baker.
He said the cause and origin of the fire remain under investigation. A damage estimate has not been determined.