A fire caused damage to the inside of Austin’s Saloon and Eatery, 481 Peterson Road in Libertyville, during Easter brunch on Sunday afternoon. | Photo: Shyann Pennington

Four people were injured after a fire broke out inside Austin’s Saloon and Eatery in Libertyville during Easter brunch, fire officials said.

The Libertyville Fire Department responded around 1 p.m. Sunday to Austin’s Saloon and Eatery, 481 Peterson Road in Libertyville, for a report of a structure fire.

Firefighters arrived to find smoke coming from the occupied restaurant, according to Libertyville Deputy Fire Chief Steven Holtz.

Holtz said the fire was reported to be in the bar area and the restaurant was in the process of being evacuated.

The Impact Fuel Room, which is located in the same building, was also evacuated. Approximately 100 people were evacuated in total.

A fire caused damage to the inside of Austin’s Saloon and Eatery, 481 Peterson Road in Libertyville, during Easter brunch on Sunday afternoon. | Photo: Woo-Sung Shim / Lake and McHenry County Scanner

The Mutual Aid Box Alarm System (MABAS) was activated to the box alarm level for additional fire department assistance.

Firefighters found that the sprinkler system had extinguished the fire but heavy smoke conditions remained throughout the building.

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Fire crews worked to ventilate the building of the smoke and checked for anyone who was injured, Holtz said.

Three people were found to have minor smoke inhalation and were treated on scene.

A fourth person suffered non-life-threatening injuries and was transported to Advocate Condell Medical Center in Libertyville for further treatment.

A fire caused damage to the inside of Austin’s Saloon and Eatery, 481 Peterson Road in Libertyville, during Easter brunch on Sunday afternoon. | Photo: Woo-Sung Shim / Lake and McHenry County Scanner

Kara Lambert told Lake and McHenry County Scanner she was at the restaurant for Easter brunch when the fire occurred.

Lambert said her family had just sat down for their reservation and were seated on the patio when she saw a “wall of flames” across from them.

“I screamed to my mom and my husband [to] get the kids and go. My mom is on a walker and my seven-year-old son walked her out,” Lambert said.

“Everyone evacuated together amazingly and cared about each other immensely,” she added.

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Kristen Derosier, who was also eating at the restaurant at the time of the fire, said she was on the top level when her group heard a “whoosh” sound.

A fire caused damage to the inside of Austin’s Saloon and Eatery, 481 Peterson Road in Libertyville, during Easter brunch on Sunday afternoon. | Photo: Woo-Sung Shim / Lake and McHenry County Scanner

People began screaming and the fire alarm went off. Derosier said she was able to evacuate quickly but called the situation “unexpected” and “scary.”

Derosier said she believes the omelet station is where the fire occurred.

Fire, smoke and water damage were reported inside the restaurant, Holtz said.

Firefighters from Countryside, Lincolnshire, Mundelein, Zion, Lake Forest, Newport, Round Lake, Lake Villa, Lake Zurich, Long Grove, Buffalo Grove, Lake Bluff and Grayslake assisted at the scene or covered Libertyville fire stations.

The cause of the fire remains under investigation by the Libertyville Fire Department.