A raccoon's journey up the side of a St. Paul, Minnesota, skyscraper Tuesday caught the interest of nervous onlookers and may others on social media.

The raccoon, known fondly under the hashtag #mprraccoon, was first spotted by intrepid Minnesota Public Radio reporter Tim Nelson having apparently been stuck on the ledge of a nearby building for two days.

It brought an end to a day of drama as people around the world anxious that the basketball-sized raccoon would lose its grip as it climbed or slip off a window ledge hundreds of feet above the light rail tracks running down Cedar Street in St. Paul. "The raccoon!" And I thought, "Well, is there a raccoon in the building?" No. That's when it started climbing.

The UBS Plaza building is 25 stories tall.

Right now in Minnesota, a humble raccoon has taken on a lofty challenge: it's scaling a skyscraper, and we're all really anxious about it.

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It added that North Korea and the United States should take legal, institutional steps to guarantee it. The US president said he had, and did not retract his description of Mr Kim as "talented".

The MPRRaccoon also became the source of anxiety for Twitter users Tuesday, as people feared for his safety and wondered how in heck he would ever get down.

"Even wild animals know @cityofsaintpaul is a great place to reach for higher heights", he tweeted.

"We have seen him pace back and forth and sniff, but he hasn't moved", said attorney Sheila Donnelly-Coyne. St. Paul Animal Control believed it may have been there all night before it started heading skyward.

An extremely fearless (or extremely stupid) raccoon scaled a Minnesota building on Tuesday, shocking onlookers and sending Twitter into an anxious frenzy.