Local, state and federal law enforcement agents are searching for a man who they say stole guns and sent a lengthy manifesto to President Donald Trump.
They say a large quantity of high-end handguns and rifles were stolen from the shop.
If anyone has any information regarding Jakubowski's location, you are asked to call the Rock County Sheriff's Office at 608-757-7911.
It was later confirmed an assault-style rifle was among the items stolen.
Currently, it is unclear whether or not the long gun was part of the Tuesday night burglary.
Jakubowski is believed to have set his vehicle on fire, but authorities said what's more worrying is what the suspect's friend told them. Jakubowski is the registered owner of the vehicle that was burned. He has a known residence at 811 Glen Street (upper) in Janesville.
The 33-year-old Janesville man is described as Caucasian, 5-foot-10, with green eyes and brown hair.
The University of Wisconsin-Rock County and Blackhawk Technical College are also closed.
At the news conference Friday, authorities said that they had tracked down more than 65 leads and searched a dozen different locations to find Jakubowski, who they described as armed and "highly unsafe".
Information was received Thursday that Jakubowski has been highly agitated recently regarding a variety of unspecified political issues. Officials said they are not considering these threats "terroristic" until they know more about Jakubowski's motive.
Schools in Beloit, South Beloit, Edgerton, Evansville, Ft.
Delavan-Darien schools will be open Friday, but, will be in a general or soft lockdown situation again as a precautionary measure.
Fort Atkinson, Janesville, Edgerton, and Milton Schools are all on soft lockdown as a safety precaution.
He said that at 1:55 p.m., the Central Office was notified of an upset parent intending to visit the Whitewater Middle School. Some went into a lockdown. That means classes were held but doors to classrooms and the schools were locked.