A fire at a midtown duplex Wednesday, sent one resident to the hospital suffering from smoke inhalation.

A passerby saw smoke and flames coming from the home in the 4600 block of East Duncan Street near North Swan and East Grant roads, and called 911 at about 3:45 p.m., Capt. Barrett Baker, spokesman for the Tucson Fire Department, said in a news release.

The first TFD engine arrived within three minutes and saw flames coming out of a window on the side of the home. The woman who had been in the home, had gotten out before firefighters arrived.

When firefighters went into the home, “they encountered heavy smoke that had banked down to a few feet off of the floor,” Baker said. “Due to the lack of visibility, the ladder crew went to the roof and cut a hole with chainsaws to allow the heat and smoke to escape.”

Firefighters also searched the adjoining house to ensure no one was inside.

It took nine units and 23 firefighters 12 minutes to bring the fire under control.

The residence sustained heavy damage to a bedroom and three people were displaced.

The cause of the fire is under investigation, Baker said.