Update as of 6:26 a.m. EDT: Iowa State University police officers completed their search of a building following a bomb threat without locating anything suspicious.
"The building will reopen at 6:30am as scheduled," officials said in a tweet.
Iowa State University (ISU) police issued an alert warning students and faculty to stay away from the Durham Center following a bomb threat early on Monday, campus newspaper Iowa State Daily reported.
Police on campus, which is located in the town of Ames, about 35 miles north of Des Moines, reportedly said they were contacted by an unknown caller threatening to bomb the facility, which sits near the university library. Following the threat, students were asked to leave the facility as well as the library before police closed the building, after the alert was issued at about 12:50 a.m.
Residents were warned to stay away from the facility. Photos from a student reporter showed officials securing the facility with guns.
Police standing outside with a gun and shield, but say they have no updates. pic.twitter.com/TncLVqYHpT
— Danielle Ferguson (@DaniFergs) April 27, 2015
ISU police reportedly declined to comment on the situation, saying that more information would become available later in the day.