Hundreds of Harvard University students and affiliates of the school received an emailed death threat on Friday.
In the email, the author threatened to come to the campus in Cambridge, Massachusetts, "tomorrow" and shoot the email recipients.
Campus police immediately launched an investigation. Other local law enforcement agencies were notified. The FBI was made aware as well.
Police say investigation indicated that the email originated overseas and believe the threat may not be credible; however, Harvard says they take the email seriously and will still have an increased police presence across campus over the weekend.
Community members are asked to call the HUPD at 617-495-1212 if they observe any suspicious activity.