Police have described the suspect as armed and unsafe, and warned residents to call 911 and not approach him if they see him.
"Priests and churches control the presidents and the banks ...", he wrote, according to the affiliate.
Jakubowski also accused the government of brainwashing Americans by the means of health insurance, taxes and religion.
TODAY'S TMJ4 obtained an exclusive copy of portions of the manifesto from a source who claims Jakubowski mailed them a copy prior to sending the original to President Donald Trump. The law enforcement official we spoke with said they cannot confirm if the copy obtained by TMJ4 is the same version mailed to the president, as Jakubowski may have written several versions.
"There were two themes in the manifesto", Janesville police Chief David Moore said. The alert messaging system is the same technology used for Amber and Silver Alerts in the state, the Sheriff's Office said.
Knudson said the White House has received the manifesto.
Investigators said in his manifesto, Jakubowski didn't make a specific threat against the President, or any individual, or against a specific location and because he hasn't been seen, the search is changing.
Authorities released a cell phone video last week showing Jakubowski mailing his manifesto at the post office.
Frank Taorimo, a former neighbor of Jakubowski's, told Fox 6 Milwaukee the man was "quite the troublemaker" and almost got into a fight with him over the way he would drive.
"Normal guy, normal guy", Phil Scriven said.
McLean said he became Jakubowski's stepfather when he was around a year old. While it at one point calls police and the military terrorists, the author also says he doesn't want to hurt anyone unless forced to do so.
"He just generally started hating society, hating police, hating the government, hating rules, regulations, controls, limits", McLean said.
Police said in a statement on Friday that Jakubowski's manifesto "includes grievances against government and personal angst towards anyone or anything other than natural law or rule".
"Stop whatever you're doing, whatever you're thinking, put everything down and call 911", he said. The letter reportedly states he was a convicted felon and could not legally purchase a gun. On Tuesday, the Federal Bureau of Investigation announced that it was doubling the reward for information that leads to his arrest, bringing the total to $20,000. They are not sure how many copies Jakubowski made.