Marist College on lockdown after online threat

Classes were canceled at Marist College in Poughkeepsie Friday after someone made an anonymous online threat.
Marist College officials say the threat was posted on Twitter, but did not release any specifics details.
An alert from the college says students who live on campus should stay in their residence halls.
All academic buildings on campus have been closed. The school is warning employees to stay away from the campus.