UPDATE April 14th at 10:32 a.m. EST:Anti-government fugitive Joseph Jakubowski has been taken into custody in Readstown, Wisconsin, police said Friday. Authorities announced Jakubowski had been captured early Friday morning, bringing the 10-day manhunt to an end.
The sheriff’s office said police received reports of a suspicious man camping on a farm in Readstown around 9:30 p.m. Thursday. The description of the man matched Jakubowski and officers took him into custody without incident.
ORIGINAL STORY: Wisconsin authorities and the FBI are searching for an "extremely dangerous" suspect who they say robbed a gun shop and mailed a 161-page manifesto to President Donald Trump, airing his grievances against the government.
Joseph A. Jakubowski, 32, allegedly broke into the Armageddon Gun Shop in Janesville, Wisconsin, Tuesday and stole 16 high-caliber rifles and handguns. Jakubowski's vehicle was found engulfed in flames near the shop about 30 minutes after the burglary.
Jakubowski has been on the run ever since and authorities told ABC News they fear he may be plotting an attack of some sort.
“You know, whether it's the president or local officials or whether it's law enforcement -- he basically has a dislike for anyone that has authority or governmental power," Rock County Sheriff Robert Spoden said during a news conference Saturday.
Authorities have released cell phone video that appears to show Jakubowski mailing a large, bulky envelope addressed to the White House. The video, which was posted to social media, also shows Jakubowski's name and return address.
"When you look at his document that he wrote, it's really a long list of injustices he believes the government and society and the upper class have put forward onto the rest of the citizens, so there's really nothing specific where he's saying, 'I was wronged in this way' or 'I was wronged in that way,'" Spoden told ABC.
In the manifesto, Jakubowski also allegedly expressed a desire to take out politicians one by one.
Because of all of this, Jakubowski is considered armed and dangerous. Authorities say he's been on the run since Tuesday, the same day he allegedly burglarized the gun shop, mailed his manifesto and set his vehicle on fire.
The FBI is now offering a $10,000 reward for information leading to his arrest. Police told ABC Jakubowski has been imprisoned before for trying to disarm an officer.