UPDATE: Federal authorities involved in fire investigation at Mt - WKOW 27: Madison, WI Breaking News, Weather and Sports

UPDATE (WKOW) -- Authorities are investigating a fire at another resort in the Wisconsin Dells area.

It happened overnight in a building at Mt. Olympus. It comes just three weeks after a fire broke out at the Wilderness Resort. Since the two fires happened at big resorts in a travel destination in just a few weeks of each other, federal investigators are back in Lake Delton looking into the fire at Mt. Olympus.

The fire broke out just before 4 a.m., destroying a maintenance building. Officials say the fire didn't spread and no one was hurt, but it caused $1.2 million in damage. 

Nearly three weeks ago, a massive fire broke out at Wilderness Resort just down the road, destroying a building still under construction. Federal investigators with the Bureau of Alcohol, Tobacco, Firearms and Explosives determined that fire was arson.

Officials say it's far too early to say whether there is any possible connection between the two incidents. 

"There's nothing indicating that they are related at this time, however, it's definitely something we want to look into," ATF Public Information Officer Ashlee Sherrill told 27 News. "There’s just a lot of similarities when you're looking at both of these are resorts, they're large structure fires, so there could be some overlap."

Delton Fire Chief Darren Jorgenson says it's been a busy few weeks for the department. He's thankful no one was hurt in either incident and the fires didn't spread to other parts of the resorts. His team will continue trying to figure out what happened in both cases. 

 "We look at every incident as if it's a possible crime, so we go through all of the evidence very methodically, carefully and do the best that we can to come up with an answer to what caused the fire," Jorgenson told 27 News.

Authorities are still asking anyone with information on these incidents to contact investigators at ATF. You can call 1-888-ATF-FIRE or email atftips@atf.org.

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UPDATE (WKOW) -- Federal investigators are assisting local fire officials in the investigation into a fire at Mt. Olympus. 

A spokesperson from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) tells 27 News its staff is assisting Delton fire investigators because of the proximity and similarity to a fire at the Wilderness Resort in Lake Delton last month. Investigators have ruled that fire an arson and have a reward out for information in the case.

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UPDATE (WKOW) -- Mt. Olympus Theme Park released a statement regarding the fire at a maintenance building overnight.

At 3:55 a.m., we were notified that a standalone maintenance building located behind the water and theme park was on fire. The Lake Delton Fire Department was on the scene within minutes. The building is a total loss.

There are no injuries and no one was near the shop at the time.

There is no disruption to operations of the resort, water park, or theme park. Operations are running normal.

We’ll now let the fire department do its work in determining a cause.

Thank you,
MtO Management

The Delton Fire Department says the single story steel building was fully involved with fire when they arrived around 3:55 a.m. Wednesday, February 14. Crews had the fire under control in about an hour and there was no damage to buildings nearby. The maintenance building had several vehicles and utility-type machines inside. 

The Delton Fire Department, Lake Delton Police Department and Department of Criminal Investigations are looking into the cause of the fire. 

Several surrounding agencies responded to help fight the fire.

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VILLAGE OF LAKE DELTON (WKOW) -- A fire broke out at the Mt. Olympus Theme Park at around 4 this morning.

Emergency crews said the fire started in a maintenance building.

Firefighters had the fire under control in about an hour, they said the building is a total loss.

Investigators aren't sure what sparked the fire -- but they said operations at the resort won't be impacted.

No injuries were reported.