With no balconies or windows that open, office workers inside the building were left to watch anxiously as the raccoon continued its climb.
The UBS Plaza building is 25 stories tall.
The story was picked up by Minnesota Public Radio and the raccoon's saga - with the hashtag "mprraccoon" went viral. Then it started to climb.
Dashcam captures officer rescuing wandering child from busy road
According to a Naperville police spokesman, the boy ran out of his mother's home when she wasn't looking. At one point, a large truck can be seen passing within a few feet of the child at a high rate of speed.
A daredevil raccoon who put everyone on edge by scaling the giddy heights of a skyscraper is on top of the world after safely making it to the roof.
- A raccoon got itself into quite a predicament as it scaled a tower in St. Paul Minnesota. By Wednesday morning it had made it to the roof of the building, easing fears that it would plummet to its death.
And after scrolling through some of the Twitter coverage, you can see why - it was perhaps the most compelling saga to unfold in the history of live action news. Nelson reported it made it back to the 17th floor.
The city's mayor, Melvin Carter, assured raccoon-watchers help was on the way.
Justify to run on dry track in Triple Crown bid
Smith, 52, is the second-oldest Kentucky Derby victor behind Bill Shoemaker, who rode Ferdinand to victory in 1986 at age 54. Justify , bred by Langley, B.C.'s John Gunther, took the Belmont Stakes by one-and-three quarter lengths today on Saturday.
"Any other measures we think would endanger him".
The woodland creature has become so famous it now has its own Twitter account.
The little climber has even prompted a (presumably not raccoon-run) parody account on Twitter.
This article was updated to reflect the lack of information on the raccoon's situation following its ascension to the roof.
Brazil tennis great Maria Bueno buried
Brazilian tennis star Beatriz Haddad Maia said that Bueno "always showed a lot of fight", both on and off the courts. She was voted female athlete of the year in a nationwide poll of sportswriters conducted by The Associated Press.