BATON ROUGE - A 34-year-old Baton Rouge man, who served prison time for threatening to blow up the downtown state courthouse in 2009, has admitted he made additional bomb threats in 2013.

U.S. Attorney Walt Green said in a news release Brian Cavalier pleaded guilty Tuesday before Chief U.S. District Judge Brian Jackson to two counts of making threats by mail.

Green says Cavalier was scheduled to stand trial next month on those federal charges.

Cavalier faces up to 10 years in prison for the 2013 bomb threats. Jackson will sentence him Aug. 18.

Green says Cavalier mailed a letter to U.S. District Court on Nov. 1, 2013, indicating a bomb had been planted in the federal courthouse and would detonate within 24 hours.