A 36-year-old man fired five years ago from the University of Alaska Anchorage has been charged with sending threatening communications to UA Fairbanks employees.

The Fairbanks Daily News-Miner reports Edward DuBois is charged with one count of transmitting threatening communications, a federal felony.

DuBois worked as a student services technician in the Registrar's Office from October 2006 to August 2009.

According to prosecutors, DuBois said he was physically and sexually assaulted by his superiors and that he was fired for "good-faith reporting of malfeasance."

An email prosecutors say he sent Aug. 14 noted that he thought often about revenge and that he wanted to stop certain officials from hurting others by using his own "sharply violent means."

DuBois was in custody Thursday at the Anchorage jail.