The Juneau County Sheriff's Office says an investigation into a possible sighting of Joseph A. Jakubowski in New Lisbon has been called off.
At a press conference on Friday (7 April), police said the suspect was "highly agitated" by recent U.S. politics and an acquaintance of his alleged that Jakubowski had spoken of a plot to steal firearms and launch an unspecified attack.
Fox News reports that In the manifesto from Joseph Jakubowski, 32, he threatened to unleash his stolen weapons on schools and public officials, as well as expressing anti-religious views, according to the Rock County Sheriff's Office.
Sun Prairie police said Sunday afternoon that a suspicious person seen at Bethlehem Lutheran Church in that city on Thursday afternoon was not Jakubowski.
After a man matching Jakubowski's description showed up at a local church asking odd questions on Thursday, Sunday services were canceled.
Investigators have followed up on around 400 tips as the search continues, Fox News reported.
"We have reached out to all of the surrounding law enforcement", Knudson said. Authorities said on Sunday morning that they still had another 50 tips to look into.
The FBI is offering up to $10,000 for information that leads to his capture.
Jakubowski's stepfather noted that he's anxious about law enforcement, saying the 32-year-old "hated police". The document, given to police by one of Jakubowski's "associates", was turned over to federal officials.
Jakubowski, who served time in prison for trying to wrestle a gun away from a police officer, is believed to have become agitated about politics recently, authorities said.
McNary also said he had spoken with an officer who said they did not believe the man was Jakubowski.
The Rock County Sheriff's Office has assigned deputies to some schools to help make students and parents feel safe. His auto was found on fire around 30 minutes after the theft.
Law enforcement received a 161-page manifesto written by Jakubowski from a friend of his.
A release from the police department said Jakubowski is 32 years old and stands 5 feet, 10 inches tall.
"I can tell you that we don't know where Mr. Jakubowski is", said Janesville's police chief, David Moore, at a press conference last week.