University of Missouri-Rolla student probed for 'terrorist-type' actions

ROLLA, Mo. (AP) -- Nearly two dozen people were being decontaminated Tuesday after a white, powdery substance was found on a man threatening "terrorist-type" actions at the University of Missouri-Rolla, school officials said.

The suspect, a student, and the substance were found along with "possible bomb materials," the school said in a news release. The student is in custody and is being questioned, the school said.

Officials declined to release the student's name or any identifying details.

The Butler-Carlton Civil Engineering Building was evacuated and 23 people who were inside the building when the suspect was arrested were being deconaminated at a special unit set up nearby.

The campus in south-central Missouri was shut down during the episode as police surrounded the building about 2:30 a.m.

Classes were canceled until at least 10 a.m. CST while officers investigate. A nearby Catholic school also canceled classes.

The Fort Leonard Wood Explosive Operations Division is investigating the possibility that a bomb may be located in the building.