An Ohio prison inmate has been indicted on charges of mailing more than a dozen threatening letters he claimed contained anthrax or fentanyl but proved to be harmless powder.
35-year-old Sean Heisa allegedly sent the letters between July 2017 and July 2018 to city, court and prison officials, two Ohio newspapers and then-Ohio Attorney General Mike DeWine. Some of letters threatened the use of explosive devices. Heisa is incarcerated at the Southern Ohio Correctional Institution in Lucasville where he's serving sentences for numerous convictions from four different counties.
