An inmate at the state correction institution at Mahanoy, Mahanoy Township, Schuylkill County, has been charged with sending threatening letters to an employee at the prison.

State police at Frackville said Anthony Louis Craig, 37, has been charged with two counts each of terroristic threats, harassment and disorderly conduct for sending two letters to Maryjane Joane Hesse, 55. The letters were received on June 24 and July 12, troopers noted.