A Florida man has plead guilty to threatening to blow up courthouses and other government offices across northern Florida.
US Attorney Lawrence Keefe announced the guilty plea on Friday.
Noah Stirn plead guilty to twelve separate charges stemming from 21 threatening letters he mailed or attempted to send in April and May of this year.
In those letters, he claimed to have planted explosives in government buildings, including the Florida Capitol and the US Courthouse in Pensacola.
Some buildings were forced to evacuate as a result of the threatening letters.
Stirn is scheduled to be sentenced in late January.
He faces up to five years in prison for each charge of mailing a threatening communication and up to 10 years for each charge of threatening to use an explosive.
No other information is available.