Man pleads guilty to sending threatening letters

A Connecticut man recently admitted to mailing threatening letters, one including an anthrax threat, to a post office, schools and a federal agent.

Roland Prejean, also known as Gary Gravelle, pleaded guilty in federal court to one count of using the U.S. mail to communicate a bomb threat and four counts of a mailing threatening communications, according to

Officials said that Prejean sent more than 50 threatening letters in early September 2010. In a letter mailed to Connecticut Superior Court Judge, Prejean included a substance that he said was a liquid form of anthrax.

"We will vigorously investigate and prosecute hoax crimes that threaten violence," U.S. Attorney David Fein said, reports. "These crimes cause emotional distress for victims and waste the valuable time and resources of our law enforcement community."

Prejean signed all of the threats with his own name. None of them were actually carried out and the substance used in the judge's letter was determined to be harmless. He faces a prison term of up to 35 years for the charges he pleaded guilty to. At the sentencing, the government plans to present evidence that he was involved in sending dozens of other threatening communications prior to his arrest and while he was detained in federal custody.