Gander RV, formerly known as Camping World, likely sustained millions of dollars in damage after a fire engulfed the large commercial building and vehicles in Antioch, officials said.
The Antioch Fire Department responded around 7:30 p.m. Saturday to Gander RV, 41517 Route 45 in unincorporated Antioch.
Firefighters arrived to find heavy flames and smoke coming from the roof of the building, which is an RV service center.
Crews had to force entry through a locked gate to gain access to the property, the fire department said.
The Mutual Aid Box Alarm System (MABAS) was activated, bringing additional departments from northern Lake County and southern Wisconsin.
Firefighters faced heavy fire and explosions from a north side garage inside the structure, fire officials said.
The fire was brought under control and then extinguished by 9:30 p.m.
Overhaul and investigation of the blaze continued until early Sunday morning.
One firefighter was injured during the blaze but was treated and released without requiring transport to an area hospital, officials said.
No civilians were injured in the fire.
Fire officials said the exact loss is not known but is estimated to be millions of dollars due to the building, RVs and contents being destroyed.
“We would like to thank all of our neighboring fire departments for their assistance helping to knock out this blaze,” Antioch Fire Chief Jon Cokefair said.
“Everyone did a great job to bring this fire under control as quickly as possible,” Cokefair said.
The cause of the fire remains under investigation by the Antioch Fire Department.
The Lake Villa, Newport, Fox Lake, Gurnee, Winthrop Harbor, Zion, Beach Park, Spring Grove and Bristol, Wisconsin fire departments assisted at the scene.