Officials have a released a security image as the search continues for the suspect in an armed robbery attempt on the University of Minnesota Twin Cities campus Monday afternoon, KSTP-TV reports.
University police said the suspect tried to rob a female student of her laptop in Anderson Hall and then fled into a tunnel system between buildings.
The suspect is described as a black male about 20 years old and 6 feet tall. He was wearing a black, puffy jacket with a hood, police said.
KARE 11 reports that during the robbery attempt, the female victim handed the suspect an empty backpack.
"That made him angry," U of M Police Chief Gregory Hastness told the station. "She screamed and that alerted people in the immediate area."
Officials urged people to call 911 if they see the suspect.
Meanwhile, the U of M has given the all-clear to students, the Pioneer Press reports.
The initial warning from authorities sent out to students at about 3 p.m. asked them to seek shelter "until further notice."
The warning was lifted at 4 p.m., said U of M spokeswoman Brooke Dillon.
"They've decided it's pretty safe to give an all clear," Dillon said. "No buildings are on lockdown."
Despite the warnings over text, Twitter and Facebook, U of M officials said students appeared to show little concern over the threat on campus, KSTP said.
KARE reported that crime is up on the U of M campus this year. Fifteen crimes were reported on campus in September, in comparison to eight in September of 2012.