The individual matched Jakubowski's description and refused to leave when asked to depart a campsite.
Local authorities established a perimeter around the campsite and made contact with the suspicious person shortly before 6 a.m. He was taken into custody without incident and identified as Jakubowski.
"With the threats that he had been making and his 161 page manifesto, making threats towards law enforcement, schools, we were very concerned," Vernon County Sheriff John Spears said.
Jakubowski has been on the run for more than a week after allegedly stealing 18 guns, two silencers and ammunition from a Janesville, Wisconsin gun store and made threats against public officials and schools.
The Rock County Sheriff's Office says Jakubowski wrote a 161-page manifesto to President Donald Trump in which he detailed a long list of grievances against the government and spoke of plans to launch attacks with the firearms he allegedly stole.
Arrangements are being made for Jakubowski to be returned to Rock County for further investigation and charges.
More information will come at a 2 p.m. news conference.