File Photo | Photo: Sam Borcia.

A person was critically injured and a dog was rescued by firefighters during a house fire in Lake Barrington early Friday morning, officials said.

The Wauconda Fire District responded around 4:46 a.m. Friday to the 1100 block of Oak Hill Road in Lake Barrington Shores for a report of a structure fire.

One of the residents called 911 and firefighters arrived to find all occupants outside of the home.

Smoke detectors were activated and fire crews found heavy smoke on the second floor coming from one of the bedrooms. A hose line was used and the fire was declared under control by 5:25 a.m.

Paramedics transported one of the residents with burn injuries to Advocate Good Shepherd Hospital in Barrington in critical condition.

Firefighters rescued a dog and gave it oxygen before a family member transported it to a local veterinarian for treatment.

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Firefighters used approximately 200 gallons of water on the fire and damage was estimated at $125,000. The cause of the fire is still under investigation but fire investigators believe it was accidental.

Firefighters from Lake Zurich, Nunda-Rural, Barrington, Barrington-Countryside, Long Grove, Buffalo Grove, Woodstock, Fox River Grove, and Algonquin, assisted during the call.