By: Emma Nelson

Nicholson Hall on the University of Minnesota's East Bank was evacuated around 11 a.m. Friday after a bomb threat was discovered earlier in the day. University police called the all-clear a little after noon.

At 10:25 a.m., University police received a tip from a staff member that a handwritten threat was on the wall of a stall in the first floor men's bathroom. University Police first did a visual walk-through of the building and then evacuated the premises to search with bomb-sniffing dogs, according to University spokesman Steve Henneberry.

Anoka and Hennepin county police also were on site with their dogs. No bomb was found.

Tim Busse, University Services spokesman, said the dogs were an extra safety precaution.

“We had enough officers on hand to do a quick visual search,” Busse said. “We decided to run the dogs through just to be sure.”

The last two bomb threats were in spring of 2011, according to University police Deputy Chief Chuck Miner, and happen "pretty sporadically."

"It's not always the same procedure every time," he said. "It depends on the circumstances."

Ellen Day, a political science and art history junior, arrived at Nicholson for an appointment after the evacuation.

“I was surprised to see all those police cars,” Day said. “I’m glad it was just a threat.”

Classes have resumed as normal.

–Kia Farhang and Jake Stark contributed to this report.