Bomb Threats at Colleges Across America

We turn, now, to the drama on three, major college campuses. Tens of thousands of students across the country, forced to flee their dorms and classrooms, told that bomb threats had been called in.... See More

We turn, now, to the drama on three, major college campuses. Tens of thousands of students across the country, forced to flee their dorms and classrooms, told that bomb threats had been called in. Investigators are looking to see if the threats are linked. And abc's john muller has the latest details. Reporter: Bomb-sniffing dogs search for explosives late friday afternoon at ohio's hiram college. Students are evacuated to the local firehouse. The third bomb scare in a long, eerie day. I was in the dormroom. And they were telling everyone that we need to evacuate. We got a mass text saying there was a bomb threat on campus. And ten minutes later, they say everybody evacuate the campus. Reporter: The bomb scare began friday morning at the university of texas at austin, where a man claiming to be al qaeda said bombs were planted all over campus. I don't believe it's al qaeda. But it's scary with people getting so upset. They want to make threats. Reporter: With all the chaos and rage in the middle east, the threats were taken extra seriously. Just an hour and a half after the texas scare, another threat terrorized north dakota state. More mass evacuations and confusion. These guys in yellow jackets came running out, get off campus. There's bomb threats. Reporter: In the end, they all were hoaxes. But were they related to each other or the troubles in the middle east? It is scary that it is this close to 9/11. And we're not the only school that they're saying had a threat like this. Reporter: Investigators will collect all the facts of each specific bomb threat first. Then, they will compare them all with details of the others to see if there's any possible connection. And the possibility that it could be a coincidence.