Police at Virginia Polytechnic Institute and State University say the college and its community were threatened in several postings on YouTube.
The Virginia Tech Collegiate Times said Virginia Tech Police said in an e-mail to students and staff that several recent postings on the popular video-sharing Web site featured "numerous threats against the Tech community."
Police at the college added they are confident the online threats were made by the same individual responsible for similar threats made last October. The late October threats were made via a YouTube account and included comments on footage of Seung-hui Cho, the student who killed 32 people in a 2007 shooting spree at Virginia Tech.
Campus police said four Virginia Tech students earlier this week received e-mail messages deemed threatening and harassing.